- Molecular phylogeny of extant gymnosperms and seed plant evolution: analysis of nuclear 18S rRNA sequencesS M Chaw
Institute of Botany, Academia Sinica, Taipei, Taiwan, Republic of China
Mol Biol Evol 14:56-68. 1997..This study attests to the utility of nuclear 18S rRNA sequences in addressing relationships among living gymnosperms. Considerable variation in substitution rates was observed among the ferns and seed plants...