A Frameshift Mutation Could Result From

Question

A frameshift mutation could result from
A)a base insertion only.
B)a base deletion only.
C)a base substitution only.
D)deletion of three consecutive bases.
E)either an insertion or a deletion of a base.

Accepted Answer

A frameshift mutation occurs when one or more bases are inserted or deleted from the DNA sequence, causing a shift in the reading frame of the codons. This can result in a completely different amino acid sequence being produced by the ribosome during translation. Therefore, either an insertion or a deletion of a base can cause a frameshift mutation. Substitution of a single base may alter the amino acid sequence, but it does not typically cause a frameshift mutation. Deletion of three consecutive bases would also cause a frameshift mutation, but this type of mutation is less common than single base insertions or deletions.