9
QuizMultiple Choice

DNA Mutations — Quiz

Question 9 • CMS 2026-2027 Biology CREDIT RECOVERY

Many different types of mutations can occur within the body. An individual experiences a mutation that changes a base in a mRNA strand, but during translation the mRNA strand still creates the same protein. Which type of mutation is responsible for the change in the mRNA base?

Answer
A
insertion
B
silent
C
nonsense
D
missense

Explanation

A silent mutation changes a nucleotide but does not change the amino acid coded for, because the genetic code has multiple codons for some amino acids. Since translation still produces the same protein, the mutation is silent. A missense mutation changes an amino acid, while a nonsense mutation creates a stop codon.

AI-written and checked against the verified answer.

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