The molecular clock has been useful to determine the phylogenetic relationships of species based on the assumption that
A) a species lineage accumulates genetic differences over time at a constant rate.
B) only some species are genetically related.
C) DNA is preserved unchanged over long periods of time.
D) species adapt at specific rates.

Question

Quizplus · Accepted Answer

The molecular clock hypothesis assumes that genetic mutations accumulate at a relatively constant rate over time, allowing scientists to estimate the time of divergence between species by comparing genetic differences.

The Molecular Clock Has Been Useful to Determine the Phylogenetic