The Rate Differences Between Molecular Clocks Are Due Largely to Differences

Multiple Choice

The rate differences between molecular clocks are due largely to differences in _____. Thus, the extreme case of a fast molecular clock is derived from a _____.

A) the intensity of selection; histone proteins
B) the size of the molecule; pseudogenes
C) the intensity of selection; pseudogene
D) the size of the molecule; histone proteins
E) None of the answer options is correct.