Examination of hominid evolution by DNA sequence homology |
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Authors: | Bill H HoyerNW van de Velde |
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Institution: | Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, D.C. 20015, U.S.A.; Department of Anatomy, School of Medicine, Wayne State University, Detroit, Mich. 48202, U.S.A.; Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, D.C. 20015, U.S.A. |
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Abstract: | Hominoid phylogeny was investigated in terms of unique DNA sequence homologies. In comparisons from the human standpoint the ΔTe50 DNA values were Man 0, chimpanzee 0·7, gorilla 1·4, gibbon 2·7, orangutan 2·9, and African green monkey 5·7. In comparisons from the orangutan standpoint the ΔTe50 DNA values were orangutan 0, chimpanzee 1·8, Man 1·9, gorilla 2·3, gibbon 2·4 and African green monkey 4·3. These results indicate that chimpanzee and gorilla are cladistically closer to Man than to orangutan and other primates, and that gorilla DNA may have diverged slightly more from the ancestral state than chimpanzee or human DNA. Comparisons from chimpanzee and gorilla DNA standpoints are needed to achieve a more definitive picture of hominoid phylogeny. |
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