Question

This is the normal nucleotide sequence on a DNA strand

A-C-T-G-A-T

what is an insertion

A. C-T-G-C-G-A-T


B A-C-T-G-A-T

C A-G-T-G-G-A-T

D A-C-T-G-G-A-U

HELP ME PLZ

Answer 1

Step-by-step explanation:

Option A, C-T-G-C-G-A-T, is an example of an insertion mutation.

This is because there is an additional "C-G" base pair in the sequence compared to the normal sequence A-C-T-G-A-T. An insertion mutation occurs when one or more base pairs are added to the normal sequence, causing a shift in the reading frame and potentially altering the amino acid sequence that the DNA encodes for.

Option B is the same as the normal nucleotide sequence.

Option C is an example of a substitution mutation, where the base pair "A" is replaced by "G" at position 3 in the sequence.

Option D contains the base "U," which is not found in DNA. It is found in RNA instead.