Biologists trace the evolution of molecules.
Gibbons
A
A
D000818:Animals; D005075:Biological Evolution; D004247:DNA / Q000235:genetics*; D005091:Exons; D005580:Fossils; D012313:RNA / Q000235:genetics*; D016337:RNA, Catalytic / Q000235:genetics / Q000378:metabolism; D012343:RNA, Transfer / Q000235:genetics / Q000378:metabolism
D016337:RNA, Catalytic; D012313:RNA; D004247:DNA; D012343:RNA, Transfer