Why is there less genetic variation among humans than among other species? A. Human ancestral lineages are relatively young compared with other species. B. Human ancestral lineages are relatively old compared with other species. C. Humans have a much lower genetic mutation rate than any other species. D. Humans have a smaller population size than any other species. E. Humans have a larger population size than any other species.

Why is there less genetic variation among humans than among other species?  this statement is debatible

Explanation:

In regard to the options, species may exhibit less variation when their branches represent the youngest lineages, suffer loss of genetic variation during evolution (i.e., genetic bottleneck) or show low mutation rates

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