Question

A mutation at one base of the first codon of a gene produces a non-functional protein. Such a mutation is referred as

(a) frameshift mutation 

(b) mis-sense mutation 

(c) non-sense mutation 

(d) reverse mutation

Answer 1

Correct option (b) mis-sense mutation

Explanation

If mutation at one base of the first codon of a gene takes place then all the subsequent codons will be cut of register (genetic code). This results into the formation of mis-sense protein which is formed due to the mutation tn the first base of first codon and thus called missense mutation.