Research Topics
Genomes and Genes | Andrew G ClarkSummaryAffiliation: Cornell University Country: USA Publications
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Publications
Genomic scans for selective sweeps using SNP dataRasmus Nielsen
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genome Res 15:1566-75. 2005..Evidence for selective sweeps is also found in many other regions, including genes known to be associated with disease risk such as DPP10 and COL4A3...
Simple models of genomic variation in human SNP densityRaazesh Sainudiin
Department of Statistics, University of Oxford, Oxford, UK
BMC Genomics 8:146. 2007..Descriptive hierarchical Poisson models and population-genetic coalescent mixture models are used to describe the observed variation in single-nucleotide polymorphism (SNP) density from samples of size two across the human genome...
Analysis of genetic variation in Ashkenazi Jews by high density SNP genotypingAdam B Olshen
Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
BMC Genet 9:14. 2008..435,632 SNPs overlapped and met annotation criteria in the two groups...
The evolutionary costs of immunological maintenance and deploymentKurt A McKean
Department of Biological Sciences, SUNY at Albany, Albany NY 12222, USA
BMC Evol Biol 8:76. 2008....
Genome sequences from extinct relativesAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Cell 134:388-9. 2008..In this issue, Green et al. (2008) exploit this feature to infer the complete mitochondrial genome sequence of one Neanderthal and place bounds on its time of common ancestry with modern humans...
Linkage disequilibrium and inference of ancestral recombination in 538 single-nucleotide polymorphism clusters across the human genomeAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Am J Hum Genet 73:285-300. 2003..This result is consistent with differences in the genealogical depth of local genomic regions, a finding that has direct bearing on the design and utility of LD mapping and on the National Institutes of Health HapMap project...
Evolution of genes and genomes on the Drosophila phylogenyAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Nature 450:203-18. 2007..These may prove to underlie differences in the ecology and behaviour of these diverse species...
The role of haplotypes in candidate gene studiesAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genet Epidemiol 27:321-33. 2004..Here we examine some of the factors that affect haplotype patterns in genes, how haplotypes may be inferred, and how haplotypes have been useful in the context of testing association between candidate genes and complex traits...
The 6th international meeting on single nucleotide polymorphism and complex genome analysis. November 20-23, 2003, Chantilly, VA, USAAndrew G Clark
Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Pharmacogenomics 5:153-6. 2004
Finding genes underlying risk of complex disease by linkage disequilibrium mappingAndrew G Clark
Molecular Biology and Genetics, 107 Biotechnology Building, Cornell University, Ithaca, New York 14853, USA
Curr Opin Genet Dev 13:296-302. 2003..In this review we consider the latest information regarding the likely efficacy of the linkage disequilibrium mapping approach...
Contrasting methods of quantifying fine structure of human recombinationAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Annu Rev Genomics Hum Genet 11:45-64. 2010....
Determinants of the success of whole-genome association testingAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genome Res 15:1463-7. 2005
Ascertainment bias in studies of human genome-wide polymorphismAndrew G Clark
Molecular Biology and Genetics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genome Res 15:1496-502. 2005....
A slippery boundaryAndrew G Clark
Molecular Biology and Genetics, 107 Biotech Building, Cornell University, Ithaca, NY 14853, USA
Proc Natl Acad Sci U S A 100:4971-2. 2003
Genetic variation in Drosophila melanogaster resistance to infection: a comparison across bacteriaBrian P Lazzaro
Department of Entomology, Field of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853, USA
Genetics 174:1539-54. 2006..lactis and E. faecalis, respectively, most of the molecular polymorphisms tested explain <10% of the total variance in bacterial load sustained after infection...
Comparative profiling of the transcriptional response to infection in two species of Drosophila by short-read cDNA sequencingTimothy B Sackton
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
BMC Genomics 10:259. 2009..However, limited functional annotation in non-model systems has hindered understanding of evolutionary novelties in the insect innate immune system...
Assessing the evolutionary impact of amino acid mutations in the human genomeAdam R Boyko
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
PLoS Genet 4:e1000083. 2008....
Natural selection on protein-coding genes in the human genomeCarlos D Bustamante
Department of Biological Statistics and Computational Biology, 101 Biotechnology Building, Cornell University, Ithaca, New York 14853, USA
Nature 437:1153-7. 2005....
Paternally biased X inactivation in mouse neonatal brainXu Wang
Deptartment of Molecular Biology and Genetics, Cornell University, 227 Biotechnology Building, Ithaca, NY 14853, USA
Genome Biol 11:R79. 2010..Methods for scoring allele-specific differential expression with a high degree of accuracy have recently motivated a quantitative reassessment of the randomness of X inactivation...
Evolutionary processes acting on candidate cis-regulatory regions in humans inferred from patterns of polymorphism and divergenceDara G Torgerson
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, USA
PLoS Genet 5:e1000592. 2009..Overall we find that natural selection has played an important role in the evolution of candidate cis-regulatory regions throughout hominid evolution...
Targets of balancing selection in the human genomeAida M Andres
Department of Molecular Biology and Genetics, Cornell University, USA
Mol Biol Evol 26:2755-64. 2009....
Contrasting multi-site genotypic distributions among discordant quantitative phenotypes: the APOA1/C3/A4/A5 gene cluster and cardiovascular disease risk factorsBret A Payseur
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, USA
Genet Epidemiol 30:508-18. 2006..Results indicate that this multi-site test can identify genotype-phenotype associations with reasonable power, including those generated by some simple epistatic models...
Strain-dependent differences in several reproductive traits are not accompanied by early postmating transcriptome changes in female Drosophila melanogasterLisa A McGraw
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Genetics 181:1273-80. 2009..melanogaster females are not caused by large modifications of transcript levels. Instead, early postmating phenotypes result from preexisting receptors or pathways that are already in place upon sexual maturity...
Dynamic evolution of the innate immune system in DrosophilaTimothy B Sackton
Field of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853, USA
Nat Genet 39:1461-8. 2007....
Estimation of fine-scale recombination intensity variation in the white-echinus interval of D. melanogasterNadia D Singh
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
J Mol Evol 69:42-53. 2009..Our results shed light on the relevant physical scale to consider in evolutionary analyses relating to recombination rate and highlight the motivations to increase the resolution of the recombination map in Drosophila...
X-linked variation in immune response in Drosophila melanogasterErin M Hill-Burns
Field of Genetics and Development, Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 183:1477-91. 2009..Many of the associations act in a sex-specific or sexually antagonistic manner, supporting the theory that with the selective pressures facing genes on the X chromosome, sexually antagonistic variation may be more easily maintained...
A scan for positively selected genes in the genomes of humans and chimpanzeesRasmus Nielsen
Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
PLoS Biol 3:e170. 2005..The polymorphism analysis further supports the presence of positive selection in these genes by showing an excess of high-frequency derived nonsynonymous mutations...
Proportionally more deleterious genetic variation in European than in African populationsKirk E Lohmueller
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Nature 451:994-7. 2008..Using extensive simulations, we show that this excess proportion of segregating damaging alleles in Europeans is probably a consequence of a bottleneck that Europeans experienced at about the time of the migration out of Africa...
Post-mating gene expression profiles of female Drosophila melanogaster in response to time and to four male accessory gland proteinsLisa A McGraw
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 179:1395-408. 2008..In contrast, Acp29AB and Acp62F modulated a large number of transcriptional changes shortly after mating...
Localizing recent adaptive evolution in the human genomeScott H Williamson
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, United States of America
PLoS Genet 3:e90. 2007..In general, we find that recent adaptation is strikingly pervasive in the human genome, with as much as 10% of the genome affected by linkage to a selective sweep...
Regulatory changes underlying expression differences within and between Drosophila speciesPatricia J Wittkopp
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Nat Genet 40:346-50. 2008..Specifically, cis-regulatory changes seem to accumulate preferentially over time...
The effect of recent admixture on inference of ancient human population historyKirk E Lohmueller
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 185:611-22. 2010....
Genotype and gene expression associations with immune function in DrosophilaTimothy B Sackton
Field of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, United States of America
PLoS Genet 6:e1000797. 2010..These results show that polymorphism in genes near the top of the immune system signaling cascade can have a disproportionate effect on organismal phenotype due to the amplification of minor effects through the cascade...
Methods for human demographic inference using haplotype patterns from genomewide single-nucleotide polymorphism dataKirk E Lohmueller
Department of Biostatistics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genetics 182:217-31. 2009..We have applied our method to data collected by Perlegen Sciences and find evidence for a severe population size reduction in northwestern Europe starting 32,500-47,500 years ago...
Associations between sperm competition and natural variation in male reproductive genes on the third chromosome of Drosophila melanogasterAnthony C Fiumera
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 176:1245-60. 2007..Our findings provide evidence that pleiotropy and epistasis are important factors in the genetic architecture of male reproductive success and show that haplotype analyses can identify associations missed in the single-marker approach...
Larval rearing environment affects several post-copulatory traits in Drosophila melanogasterLisa A McGraw
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Biol Lett 3:607-10. 2007....
A hierarchical Bayesian model for a novel sparse partial diallel crossing designAnthony J Greenberg
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Genetics 185:361-73. 2010..We also illustrate how our approach allows the construction of posterior distributions of combinations of parameters by calculating narrow-sense heritability and a genetic correlation between activities of two enzymes...
Strong evidence for lineage and sequence specificity of substitution rates and patterns in DrosophilaNadia D Singh
Department of Molecular Biology and Genetics, Cornell University
Mol Biol Evol 26:1591-605. 2009....
The genetic basis for male x female interactions underlying variation in reproductive phenotypes of DrosophilaClement Y Chow
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853 2703, USA
Genetics 186:1355-65. 2010..The results of this study begin to elucidate the complex genetic architecture of reproductive and sperm competition phenotypes and have significant implications for the evolution of male and female characters...
Detecting directional selection in the presence of recent admixture in African-AmericansKirk E Lohmueller
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 187:823-35. 2011..Our results have implications for interpreting recent genome-wide scans for positive selection in human populations...
Association between sex-biased gene expression and mutations with sex-specific phenotypic consequences in DrosophilaTim Connallon
Department of Molecular Biology and Genetics, Cornell University, USA
Genome Biol Evol 3:151-5. 2011..These results have interesting implications for the evolution of sexual dimorphism and sex-specific adaptation...
Inferring nonneutral evolution from human-chimp-mouse orthologous gene triosAndrew G Clark
Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Science 302:1960-3. 2003..In addition to suggesting adaptive physiological differences between chimps and humans, human-accelerated genes are significantly more likely to underlie major known Mendelian disorders...
Evolutionary changes in cis and trans gene regulationPatricia J Wittkopp
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Nature 430:85-8. 2004..These data indicate that interspecific expression differences are not caused by select trans-regulatory changes with widespread effects, but rather by many cis-acting changes spread throughout the genome...
Patterns of positive selection in six Mammalian genomesCarolin Kosiol
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, United States of America
PLoS Genet 4:e1000144. 2008..This study provides additional evidence for widespread positive selection in mammalian evolution and new genome-wide insights into the functional implications of positive selection...
Linkage disequilibrium as a signature of selective sweepsYuseob Kim
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genetics 167:1513-24. 2004..However, the improvement made by including LD is rather small, suggesting that most of the relevant information regarding selective sweeps is captured by the spatial distribution and marginal allele frequencies of polymorphisms...
Transcriptome-wide identification of novel imprinted genes in neonatal mouse brainXu Wang
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
PLoS ONE 3:e3839. 2008....
Functional regulatory divergence of the innate immune system in interspecific Drosophila hybridsErin M Hill-Burns
Field of Genetics and Development, Department of Molecular Biology and Genetics, Cornell University
Mol Biol Evol 27:2596-605. 2010....
Natural variation in male-induced 'cost-of-mating' and allele-specific association with male reproductive genes in Drosophila melanogasterAnthony C Fiumera
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Philos Trans R Soc Lond B Biol Sci 361:355-61. 2006..Postcopulatory sexual selection could lead to sexual conflict by favouring males that prevent their mates from mating, even when there is a viability cost to those females...
Reconstituting the frequency spectrum of ascertained single-nucleotide polymorphism dataRasmus Nielsen
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genetics 168:2373-82. 2004..Appropriate treatment of SNP ascertainment is vital to our ability to make correct inferences from the data of the International HapMap Project...
Translocation of Y-linked genes to the dot chromosome in Drosophila pseudoobscuraAmanda M Larracuente
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, USA
Mol Biol Evol 27:1612-20. 2010..We postulate that the nascent D. pseudoobscura Y chromosome acquired and amplified copies of the IGS, suggesting a potential mechanism for X-Y pairing in D. pseudoobscura...
Understanding the accuracy of statistical haplotype inference with sequence data of known phaseAida M Andres
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
Genet Epidemiol 31:659-71. 2007..Strategies to improve confidence in reconstructed haplotypes, and realistic alternatives to the analysis of inferred haplotypes, are discussed...
Contrasting infection strategies in generalist and specialist wasp parasitoids of Drosophila melanogasterTodd A Schlenke
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, USA
PLoS Pathog 3:1486-501. 2007..However, we uncover the mechanism for one potentially important fitness tradeoff of the generalist's highly immune suppressive infection strategy...
Evolution of protein-coding genes in DrosophilaAmanda M Larracuente
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Trends Genet 24:114-23. 2008....
Mapping multiple Quantitative Trait Loci by Bayesian classificationMin Zhang
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14853, USA
Genetics 169:2305-18. 2005..A simulation study demonstrated the power of this approach across levels of trait heritability and when marker data were sparse...
Simultaneous inference of selection and population growth from patterns of variation in the human genomeScott H Williamson
Department of Biological Statistics and Computational Biology, 101 Biotechnology Building, Cornell University, Ithaca, NY 14853, USA
Proc Natl Acad Sci U S A 102:7882-7. 2005....
Bayesian and maximum likelihood estimation of genetic mapsThomas L York
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14850, USA
Genet Res 85:159-68. 2005..We also re-analyse a recently published set of data from the eggplant and show that the use of the MCMC-based method leads to smaller estimates of genetic distances...
Bayesian estimation of the number of inversions in the history of two chromosomesThomas L York
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, USA
J Comput Biol 9:805-18. 2002..melanogaster comparison, the lower boundary of a 95% highest posterior density credible interval for the number of inversions is considerably larger than the most parsimonious number of inversions...
Environmental and genetic perturbations reveal different networks of metabolic regulationAnthony J Greenberg
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Mol Syst Biol 7:563. 2011....
Independent effects of cis- and trans-regulatory variation on gene expression in Drosophila melanogasterPatricia J Wittkopp
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 178:1831-5. 2008..The frequency of such independent interactions on a genomic scale is yet to be determined...
Parent-of-origin effects on mRNA expression in Drosophila melanogaster not caused by genomic imprintingPatricia J Wittkopp
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 173:1817-21. 2006..Offspring from reciprocal crosses exhibit differences in total expression without differences in allelic expression, indicating that other types of maternal and/or paternal effects alter expression...
A survey for novel imprinted genes in the mouse placenta by mRNA-seqXu Wang
Department of Molecular Biology and Genetics, Cornell Center for Comparative and Population Genomics, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853, USA
Genetics 189:109-22. 2011..Despite previous appearance that the placenta tends to display an excess of maternally expressed imprinted genes, with the addition of our validated set of placenta-imprinted genes, this maternal bias has disappeared...
Genomics of the evolutionary processAndrew G Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Trends Ecol Evol 21:316-21. 2006..These methods also identify negatively selected genes, providing some clue to genes that are most likely to be mutable to a disease-causing state...
Adaptive evolution of cytochrome c oxidase: Infrastructure for a carnivorous plant radiationRichard W Jobson
Department of Plant Biology, Cornell University, Ithaca, NY 14853, USA
Proc Natl Acad Sci U S A 101:18064-8. 2004....
Folate network genetic variation, plasma homocysteine, and global genomic methylation content: a genetic association studySusan M Wernimont
Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
BMC Med Genet 12:150. 2011..Sequence variants in genes functioning in folate-mediated one-carbon metabolism are hypothesized to lead to changes in levels of homocysteine and DNA methylation, which, in turn, are associated with risk of cardiovascular disease...
Sperm competitive ability in Drosophila melanogaster associated with variation in male reproductive proteinsAnthony C Fiumera
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 169:243-57. 2005..The latter case is consistent with antagonistic pleiotropy and may serve as a mechanism maintaining genetic variation...
Low exchangeability of selenocysteine, the 21st amino acid, in vertebrate proteinsSergi Castellano
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
Mol Biol Evol 26:2031-40. 2009..A better understanding of the selenoproteomes and neutral evolutionary patterns in other taxa will be necessary to fully assess the generality of this conclusion...
Contrasting the efficacy of selection on the X and autosomes in DrosophilaNadia D Singh
Department of Molecular Biology and Genetics, Cornell University, USA
Mol Biol Evol 25:454-67. 2008....
Genomic analyses of transcription factor binding, histone acetylation, and gene expression reveal mechanistically distinct classes of estrogen-regulated promotersMiltiadis Kininis
Department of Molecular Biology and Genetics, Cornell University, 465 Biotechnology Building, Ithaca, NY 14853, USA
Mol Cell Biol 27:5090-104. 2007..These mechanistic insights are likely to be relevant for understanding gene regulation by a wide variety of nuclear receptors...
Population dynamics of PIWI-interacting RNAs (piRNAs) and their targets in DrosophilaJian Lu
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genome Res 20:212-27. 2010....
Genetic basis of natural variation in D. melanogaster antibacterial immunityBrian P Lazzaro
Department of Entomology, 4138 Comstock Hall, Cornell University, Ithaca, NY 14853, USA
Science 303:1873-6. 2004..Variation in these genes, therefore, seems to drive variability in immunocompetence among wild Drosophila...
The resolution of sexual antagonism by gene duplicationTim Connallon
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853 2703, USA
Genetics 187:919-37. 2011..Although this result differs from previous models of sexual antagonism, it is consistent with several findings from the empirical genomics literature...
Population genetic structure of the people of QatarHaley Hunter-Zinck
Program in Computational Biology and Medicine, Cornell University, Ithaca, NY 14850, USA
Am J Hum Genet 87:17-25. 2010....
Sex linkage, sex-specific selection, and the role of recombination in the evolution of sexually dimorphic gene expressionTim Connallon
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853 2703, USA
Evolution 64:3417-42. 2010..The theory suggests that sexual selection may strongly influence the architectures of animal genomes, as well as the chromosomal distribution of fixed substitutions underlying sexually dimorphic traits...
Evolutionary analysis of amino acid repeats across the genomes of 12 Drosophila speciesMelanie A Huntley
Department of Molecular Biology and Genetics Cornell University, USA
Mol Biol Evol 24:2598-609. 2007..With additional evidence to suggest a corresponding elevation in positive selection we propose that some repeats may be inducing compensatory substitutions in their surrounding sequence...
Mapping determinants of variation in energy metabolism, respiration and flight in DrosophilaKristi L Montooth
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA
Genetics 165:623-35. 2003..This has important consequences for the evolution of performance traits that depend upon these metabolic networks...
Gene duplication, gene conversion and the evolution of the Y chromosomeTim Connallon
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853 2703, USA
Genetics 186:277-86. 2010..The results may also be applicable to the recently observed pattern of tetraploidy and gene conversion in asexual, bdelloid rotifers...
Estimating the distribution of selection coefficients from phylogenetic data with applications to mitochondrial and viral DNARasmus Nielsen
Department of Biometrics, Cornell University, USA
Mol Biol Evol 20:1231-9. 2003....
Evolution of the integral membrane desaturase gene family in moths and fliesDouglas C Knipple
Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, New York 14456, USA
Genetics 162:1737-52. 2002....
Microsatellite mutation models: insights from a comparison of humans and chimpanzeesRaazesh Sainudiin
Department of Statistical Science, Cornell University, Ithaca, New York 14853, USA
Genetics 168:383-95. 2004..In general, models that allow chimps to have a larger per-repeat unit slippage rate and/or a shorter focal length compared to humans give a better fit to the human-chimp data as well as the human genomic data...
Detecting selection in noncoding regions of nucleotide sequencesWendy S W Wong
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14850, USA
Genetics 167:949-58. 2004..Data analysis of both simulated and real viral data is presented. Using the new method we show that positive selection in viruses is acting primarily in protein-coding regions and is rare or absent in noncoding regions...
Dependence of paracentric inversion rate on tract lengthThomas L York
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, USA
BMC Bioinformatics 8:115. 2007..We develop a Bayesian method based on MCMC for estimating the relative rates of pericentric and paracentric inversions from marker data from two species. The method also allows estimation of the distribution of inversion tract lengths...
Bayesian estimation of genomic distanceRichard Durrett
Department of Mathematics, Cornell University, Ithaca, New York 14853, USA
Genetics 166:621-9. 2004..In the first case the most likely number of events is larger than the parsimony value. In the last two cases the parsimony solutions have very small probability...
Maximum likelihood and Bayesian methods for estimating the distribution of selective effects among classes of mutations using DNA polymorphism dataCarlos D Bustamante
Mathematical Genetics Group, Department of Statistics, University of Oxford, 1 South Parks Road, Oxford, UK OX1 3TG
Theor Popul Biol 63:91-103. 2003....
Estimating effective paternity number in social insects and the effective number of alleles in a populationRasmus Nielsen
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, USA
Mol Ecol 12:3157-64. 2003..It should also be of use in population genetic studies in which the effective number of alleles is of interest...
Mapping mutations on phylogeniesRasmus Nielsen
Department of Biological Statistics, Cornell University, 439 Warren Hall, Ithaca, New York 14853 7801, USA
Syst Biol 51:729-39. 2002..Applications include a method for testing for variation in the substitution rate along the sequence and a method for testing whether the d(N)/d(S) ratio varies among lineages in the phylogeny...
Correcting for ascertainment biases when analyzing SNP data: applications to the estimation of linkage disequilibriumRasmus Nielsen
Department of Biometrics, Cornell University, 439 Warren Hall, Ithaca, NY 14853 7801, USA
Theor Popul Biol 63:245-55. 2003....
Accuracy and power of statistical methods for detecting adaptive evolution in protein coding sequences and for identifying positively selected sitesWendy S W Wong
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York 14850, USA
Genetics 168:1041-51. 2004..The parsimony method has a very low rate of false positives but very little power for detecting positive selection or identifying positively selected sites...
Patterns of mutation and selection at synonymous sites in DrosophilaNadia D Singh
Department of Molecular Biology and Genetics, Cornell University, Ithaca, USA
Mol Biol Evol 24:2687-97. 2007....
Statistical approaches for DNA barcodingRasmus Nielsen
Department of Biological Statistics and Computational Biology, Center for Bioinformatics, University of Copenhagen Universitetsparken 15, 2100 Copenhagen, Denmark
Syst Biol 55:162-9. 2006
Identification of physicochemical selective pressure on protein encoding nucleotide sequencesWendy S W Wong
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, USA
BMC Bioinformatics 7:148. 2006..However, they have been limited by not taking the physiochemical properties of amino acids into account...
Detecting site-specific physicochemical selective pressures: applications to the Class I HLA of the human major histocompatibility complex and the SRK of the plant sporophytic self-incompatibility systemRaazesh Sainudiin
Department of Statistical Science, Cornell University, Ithaca, NY14853, USA
J Mol Evol 60:315-26. 2005..An empirical Bayes approach is used to identify sites that may be important for ligand recognition in these proteins...
Finding cis-regulatory modules in Drosophila using phylogenetic hidden Markov modelsWendy S W Wong
Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, USA
Bioinformatics 23:2031-7. 2007..There are numerous methods available for solving this problem, however, very few of them take advantage of the increasing availability of comparative genomic data...
The population structure of African cultivated rice oryza glaberrima (Steud.): evidence for elevated levels of linkage disequilibrium caused by admixture with O. sativa and ecological adaptationMande Semon
Department of Plant Breeding, Cornell University, Ithaca, New York 14853, USA
Genetics 169:1639-47. 2005..The remaining three O. glaberrima subpopulations were significantly associated with specific combinations of phenotypic traits-possibly reflecting ecological adaptation to different growing environments...
Population genetic analysis of ascertained SNP dataRasmus Nielsen
Department of Biological Statistics and Computational Biology, Cornell University, 439 Warren Hall, Ithaca, NY 14853 7801, USA
Hum Genomics 1:218-24. 2004..Several recently developed methods for correcting for the ascertainment bias will also be discussed...
Genes regulated by mating, sperm, or seminal proteins in mated female Drosophila melanogasterLisa A McGraw
Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
Curr Biol 14:1509-14. 2004..The mating-dependent genes that we have identified contribute to many biological processes including metabolism, immune defense, and protein modification...
Evolutionary constraint and adaptation in the metabolic network of DrosophilaAnthony J Greenberg
Department of Molecular Biology and Genetics, Cornell University, USA
Mol Biol Evol 25:2537-46. 2008..Our analyses suggest that this pattern is driven by strong constraint of enzymes acting at branch points in metabolic pathways. We conclude that metabolic network architecture and enzyme function separately affect enzyme evolution rates...
Demographic histories and patterns of linkage disequilibrium in Chinese and Indian rhesus macaquesRyan D Hernandez
Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14850, USA
Science 316:240-3. 2007..15 at 10 kilobases) versus Indian (r(2) approximately 0.52 at 10 kilobases) macaque populations...
Molecular population genetics of inducible antibacterial peptide genes in Drosophila melanogasterBrian P Lazzaro
Molecular Biology and Genetics, Cornell University, USA
Mol Biol Evol 20:914-23. 2003....
Rational design of DNA sequence-based strategies for subtyping Listeria monocytogenesSteven Cai
Department of Food Science, Cornell University, Ithaca, New York 14853, USA
J Clin Microbiol 40:3319-25. 2002..Our specific results also show that inclusion of virulence gene target sequences in a DNA sequence-based subtyping scheme for L. monocytogenes is necessary to achieve maximum subtype differentiation...
Conjuring SNPs to detect associationsAndrew G Clark
Nat Genet 39:815-6. 2007
fRFLP and fAFLP: medium-throughput genotyping by fluorescently post-labeling restriction digestionBrian P Lazzaro
Pennsylvania State University, University Park, USA
Biotechniques 33:539-40, 542, 545-6. 2002....
Research Grants
- Modeling DNA Diversity in Reverse Cholestrol TransportAndrew Clark; Fiscal Year: 2009..This research not only considers the individual effects of variation in each gene, but their interactions with other genes and with the environment. ..
- Functional and Comparative Genomic of Drosophila immunityAndrew Clark; Fiscal Year: 2009..Through our modeling efforts, data from all four aims will provide an integrated, quantitative picture of variation in Drosophila innate immune function and its control by its underlying gene regulatory network. ..
- Comparative Functional Genomics of Drosophila ObesityAndrew Clark; Fiscal Year: 2009..which particular genes and pathways are most relevant to variation in fat storage homeostasis, and by developing a systems biology approach to make inferences from data that span cellular, endocrine, and whole-organism attributes ..
- Molecular Evolution of Drosophila Y ChromosomeANDREW G contact CLARK; Fiscal Year: 2010..The proposed study entails primary discovery of most of the Y- linked genes across a group of 12 species and a detailed study of their evolutionary divergence. ..
- Population genetic inferences from dense genotype dataAndrew Clark; Fiscal Year: 2009..These inferences can provide vital clues to identifying genes that are associated with risk of complex genetic disorders. ..
- Drosophila genes causing male x female interaction in reproductionMARIANA FEDERICA WOLFNER; Fiscal Year: 2010..abstract_text> ..
- Population genetic inferences from dense genotype dataRasmus Nielsen; Fiscal Year: 2010..These inferences can provide vital clues to identifying genes that are associated with risk of complex genetic disorders. ..
- Modeling DNA Diversity in Reverse Cholestrol TransportAndrew G Clark; Fiscal Year: 2010..This research not only considers the individual effects of variation in each gene, but their interactions with other genes and with the environment. ..
- Dimension Reduction Approaches for Genome-wide Association TestingAndrew Clark; Fiscal Year: 2007..Of particular interest will be the tuning model parameters to optimize the balance of false positive and false negative inferences. ..
- Functional and Comparative Genomic of Drosophila immunityAndrew Clark; Fiscal Year: 2007..Through our modeling efforts, data from all four aims will provide an integrated, quantitative picture of variation in Drosophila innate immune function and its control by its underlying gene regulatory network. ..
- POLYMORPHISM/DIVERGENCE IN DROSOPHILA PATHOGEN DEFENSESAndrew Clark; Fiscal Year: 2002....
- Molecular Evolution of Drosophila Y ChromosomeAndrew Clark; Fiscal Year: 2005..These studies will establish D. melanogaster as a key experimental system for analysis of Y chromosome polymorphism and molecular evolution. ..
- Comparative Functional Genomics of Drosophila ObesityAndrew Clark; Fiscal Year: 2007..which particular genes and pathways are most relevant to variation in fat storage homeostasis, and by developing a systems biology approach to make inferences from data that span cellular, endocrine, and whole-organism attributes ..
- Population genetic inferences from dense genotype dataAndrew Clark; Fiscal Year: 2006..These tests will help identify the attributes of local LD that best predict the power of association tests, and will serve as additional guidance to identify regions requiring more dense SNP coverage. ..
- Modeling DNA Diversity in Reverse Cholesterol TransportAndrew Clark; Fiscal Year: 2006..Novel approaches to genotype-phenotype associations will be pursued, in close collaboration with Component 3, by testing the fit of the neutral site frequency spectrum to data stratified by phenotypic measures. ..
- Inferring Multiple-SNP Disease Association with DNA Resequence DataRasmus Nielsen; Fiscal Year: 2010..These methods will also be extended to include prior information about molecular mechanisms of gene function, where available, as well as environmental contributions to disease risk. ..
