Question

PLEASE HELP

Which of the following is not true about single
gene mutations?
A deletion can cause the reading frame of the codons
to change affecting many amino acids of the protein
An insertion can cause the reading frame of the
codons to change affecting many amino acids of the
protein
A substitution can cause the reading frame of the
codons to change affecting many amino acids of the
protein

Answer 1

I think its B because An insertion changes the number of DNA bases in a gene by adding a piece of DNA. As a result, the protein made by the gene may not function properly. But it could be C because Missense mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.