Volpe's Understanding Evolution 7th Edition by Peter Rosenbaum

Exercise 1

Mutations tend to accumulate in amino acids, proteins and in DNA at a relatively constant rate and this property has been used to estimate the length of time organisms have been diverged from each other. While imprecise in many ways, this methodology is known as:
A) DNA sequencing
B) RNA sequencing
C) Amino acid substitution
D) Molecular cloning
E) Molecular clock