A Point Mutation That Causes an Amino Acid Replacement Is

Question

A point mutation that causes an amino acid replacement is called a:
A)synonymous (silent)mutation.
B)nonsynonymous (missense)mutation.
C)nonsense mutation.
D)stop mutation.
E)transition mutation.

Accepted Answer

A nonsynonymous mutation changes the DNA sequence, leading to a different amino acid being incorporated into the protein, which could have an impact on protein function. The other choices do not necessarily involve an amino acid replacement.