When two lineages split from a common ancestor, each accumulates different mutations over long periods of time. The number of mutations is proportional to the length of time that the two groups have been genetically separate. A scientist studies corresponding genes in two species. Which data would be most useful for determining the time when the split from the common ancestor occurred? *
A) mutation rate and the number of mutations in each sequence
B) the number of repeated nucleotides and their specific locations in the two sequences
C
) mutation rate and the number of nucleotides in each sequence
D) mutation rate and the number of nucleotides that differ between the two sequences
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