Why are molecular clocks important in the construction of cladograms? they compare the frequency of reproduction to determine which traits evolved through mutations. they compare the genes inherited by a species to determine descendants. they compare the number of mutations to determine how long ago species separated and evolved?

They compare the number of mutations to determine how long ago species separated and evolved.

Explanation:

Molecular clocks compares the total number of different nucleotides present in genome of two organisms to estimate the time of their divergence from each other. The average rate at which the specific gene evolves tells about the dates of evolutionary branch points. In this way, the molecular clocks compare the number of mutations to determine how long ago species separated and evolved.

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