In a Sequence of DNA Taken from Various Species of Snails,researchers

Multiple Choice

In a sequence of DNA taken from various species of snails,researchers have found that the rates of nonsynonymous substitutions and synonymous substitutions are roughly the same.What can we infer from this pattern?

A) This gene has a high mutation rate.
B) This gene has a low mutation rate.
C) Strong stabilizing selection is acting on this gene.
D) Strong positive selection is acting on this gene.
E) Most of the amino-acid substitutions at this gene are neutral.