Substitution of one base pair for another in a coding region of a gene can result in a ____ mutation where a codon specifying an amino acid is changed to a stop codon.
A) missense
B) chromosomal
C) frameshift
D) silent
E) nonsense

Question

Quizplus · Accepted Answer

This type of mutation is known as a nonsense mutation. It occurs when a substitution in the DNA sequence changes a codon that originally specified an amino acid into a stop codon, leading to premature termination of the protein.

Substitution of One Base Pair for Another in a Coding