TREE IDENTIFICATION
IDENTIFICATION KEYS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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You look at two species and see very similar DNA. What does this likely tell you?
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These are the same animal.
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These animals have a common ancestor.
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These animals are not likely related.
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These animals are likely becoming one species.
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Explanation:
Detailed explanation-1: -Q. You look at two species and see very similar DNA. What does this likely tell you? These are the same animal.
Detailed explanation-2: -Because the DNA sequence determines a protein’s amino acid sequence, a gene shared by two closely related organisms should have similar, or even identical, amino acid sequences. That’s because closely related species most likely diverged from one another fairly recently in the evolutionary span.
Detailed explanation-3: -Molecular clocks are used to determine how closely two species are related by calculating the number of differences between the species’ DNA sequences or amino acid sequences. These clocks are sometimes called gene clocks or evolutionary clocks.
There is 1 question to complete.