Differences in amino acid composition of the protein cytochrome c obtained from a variety of organisms on the evolutionary scale

Differences in amino acid composition of the protein cytochrome c obtained from a variety of organisms on the evolutionary scale. (From Atlas of Protein Sequence and Structure, 1967-1968, by Margaret Dayhoff and Richard V. Eck. Washington, D.C. National Biomedical Research

Organism	Number of differences in amino acid sequence	Distance from humans on the basis of "traditional" taxonomy
Humans	0
Monkey	1	Same order (Primates), but different family (not Hominidae)
Pig Horse Dog Rabbit	10 12 11 9	Same class (Mammalia) but different order (not Primates)
Chicken, turkey Duck	13 11	Same phylum (Chordata), but different class (Not Mammalia), but they ARE homeothermic.
Rattlesnake Turtle Tuna	14 15 21	Same phylum (Chordata) but different classes (not mammalia), and these are poikilothermic
Moth	31	Same Kingdom (Animalia), but different phylum (not Chordata)
Candida	51	Different kingdom (*Fungi*)