A mutation that changes a codon sequence,and subsequently changes the amino acid that should have been placed at that point in the polypeptide chain,is called a
A) frameshift mutation.
B) missense mutation.
C) silent mutation.
D) nonsense mutation.
E) dominant mutation.

Question

Quizplus · Accepted Answer

A missense mutation is a type of point mutation where a single base pair substitution results in a codon that codes for a different amino acid. This changes the polypeptide sequence and can affect the protein's function. A frameshift mutation involves the addition or deletion of one or more nucleotides, which alters the reading frame and changes all subsequent amino acids. A silent mutation changes the codon but does not alter the resulting amino acid. A nonsense mutation changes a codon that codes for an amino acid to a stop codon, resulting in premature termination of the polypeptide chain. A dominant mutation is a type of genetic mutation that only requires one copy of the allele to cause a phenotypic effect.

A Mutation That Changes a Codon Sequence,and Subsequently Changes the Amino