The molecular clock.
Berry
Colin
C
D000596:Amino Acids / Q000235:genetics; D000818:Animals; D019143:Evolution, Molecular; D006454:Hemoglobins / Q000235:genetics; D006801:Humans; D013045:Species Specificity; D014157:Transcription Factors / Q000235:genetics; D014714:Vertebrates
D000596:Amino Acids; D006454:Hemoglobins; D014157:Transcription Factors