Question

A mutation has been introduced into a DNA sequence, but the mutation is silent. What does this mean?

Answer 1

A mutation has been introduced into a DNA sequence, but the mutation is silent this means that this type of mutation does not have an observable effect on phenotypes of an organism.

in this type of mutation there is only a chnage in the sequence of nucleotide but the amino acid sequence means the proteins are same. there is no change in the proteins function.

example - within a certain polypeptide ,if the codon AAA is altered to become AAG, the same amino acid that is lysine will be incorporated within a polypeptide chain.

it means that there is only substitution of A at third position by Guanine.but there is no any apparent change in the amino acid after translation.