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Which best describes how DNA is used as a molecular clock? (2 points)
The number of mutations in DNA is compared between two species.
The total amount of DNA is compared between two species.
The percent of carbon in DNA is compared between parent and offspring.
The total mass of DNA is compared between parent and offspring.

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MissPhiladelphia
I think the correct answer from the choices listed above is the third option. The DNA is used as a molecular clock in the sense that the percent of carbon in DNA is compared between parent and offspring. Hope this answers the question. Have a nice day.

Answer:

The correct answer would be the first option.

Molecular clocks compare the nucleotide sequence of DNA or RNA between two species estimate the time they diverged from each other.

The number of mutation present in the nucleotide sequences of two specied provide this estimation.

The more the number of mutation the earlier they diverged from each other.

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