Divergence time estimates based on molecular clocks are
A)best interpreted with caution, since they depend on assumptions that are difficult to test.
B)likely to be correct plus or minus a few decades.
C)usually worthless since we cannot directly observe divergence times unless we invent a time machine.
D)more reliable than divergence dates that are based on analysis of the fossil record.

Question

Quizplus · Accepted Answer

Molecular clock estimates rely on assumptions about mutation rates and generation times, which can vary among species and even within the same species. These assumptions are difficult to test, which makes molecular clock estimates uncertain and in need of caution when interpreting.

Divergence Time Estimates Based on Molecular Clocks Are