EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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humans and chimpanzees are most closely related than humans and dogs.
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all vertebrate species have the same degree of relationship to one another.
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humans and chimpanzees are not related to dogs.
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only humans and chimpanzees have a common ancestor.
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Detailed explanation-1: -Cytochrome-c is a protein that scientists often use to compare the evolutionary relationships among species. There is one difference in the cytochrome-c sequence between humans and rhesus monkeys.
Detailed explanation-2: -Cytochrome c has changed very slowly during evolution. The amino acid sequence between humans and chimpanzees are identical while between the rhesus monkey, there is a difference of one amino acid in comparison. This table shows that the amino acid sequence compared from humans are more closely related to chimpanzees.
Detailed explanation-3: -Human cytochrome C and chimpanzee cytochrome c are identical in all 104 amino acids. Our close relationship with chimpanzees is revealed by this high degree of resemblance.
Detailed explanation-4: -For example, the 104 amino acid sequence for mammalian cytochrome c is identical in humans, chimpanzees, gorillas, orangutans and gibbons.