Why can the reduction in melting temperature for hybrid DNA between two mammalian species be used to predict how long it has been since those species diverged from a common ancestor? A., Mutations in DNA accumulate at a fairly constant rate. B., Closer relatives have fewer DNA base pair mismatches. C., Closer relatives are less likely to be reproductively isolated.

Question

Biology

Nickolas Vaughan

25 June, 18:23

Why can the reduction in melting temperature for hybrid DNA between two mammalian species be used to predict how long it has been since those species diverged from a common ancestor? A., Mutations in DNA accumulate at a fairly constant rate. B., Closer relatives have fewer DNA base pair mismatches. C., Closer relatives are less likely to be reproductively isolated.

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Answers (1)

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Cecilia Cannon · Answer 1

A

Explanation:

Due to mutations in DNA that accumulate at a fairly constant rate, the reduction in melting temperature for hybrid DNA between two mammalian species, it is used to predict how long those species have been since divergence.

Hence option A is correct.