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30 November, 11:34

Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does this evidence suggest? A. Fruit flies have had more mutations and recombinations during their evolution than mice. B. Mice have had more mutations and recombinations during their evolution than fruit flies. C. Humans and mice share a more recent common ancestor than do humans and fruit flies. D. Mice and fruit flies share a more recent common ancestor with each other than with humans.

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  1. 30 November, 12:44
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    The correct answer is option C. Humans and mice share a more recent common ancestor than do humans and fruit flies.

    The molecular basis of the evolution says that the organisms, which have more similar genes and genetic sequence are more likely to have same most common ancestor. In this case, the similarity between the mice and the humans are more common as compared to the humans and the fruit flies. So, the human and the mice share more recent common ancestors.
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