How does the molecular clock theory work?
A)It is based on examining the number of genetic mutations that have occurred during divergence of species.
B)It proposes that species divergence is based on a constant rate of genetic drift and isolation.
C)It is based on the notion that the Earth is one hour old,and it calculates events on a 60-minute clock.
D)It is based on examining molecules and how chemical reactions occur over time.
E)It argues that evolution occurs at steady rates and cannot make any changes over time that are not programmed.

Question

Quizplus · Accepted Answer

The molecular clock theory is based on examining the number of genetic mutations that have occurred during the divergence of species, assuming that these mutations occur at a relatively constant rate over time. By comparing the number of genetic differences between two species, scientists can estimate how long ago they diverged from a common ancestor.

How Does the Molecular Clock Theory Work