Molecular clocks are more reliable when ________.
A) the surrounding pH is close to 7.0
B) most mutations of highly conserved DNA sequences should have no functional effect
C) the DNA codes for amino acid sequences whose side groups (or R groups) have a neutral pH
D) a significant proportion of mutations are not acted upon by natural selection

Question

Quizplus · Accepted Answer

Molecular clocks are more reliable when a significant proportion of mutations are neutral and not acted upon by natural selection, as this allows for a more constant rate of mutation accumulation over time.

Molecular Clocks Are More Reliable When ________