Question

what do you mean by mutation ? explain​

Answer 1

Explanation:

A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.

Answer 2

Answer:

DNA replication normally occurs with absolute precision on an average it makes error for every $10^{10}$ base pairs that are copied.

There is any error that changes the base sequence of DNA alters the genetic message. Any change in the base sequence of DNA which leads to the synthesis of proteins with altered Amino acid sequence is called mutation.

There are two types of mutation

• Base substitution mutation
• Frame shift mutation