Question

what is mutations .......

Answer 1

In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.

Answer 2

HEY MATE HERE IS YOUR ANSWER:-

It is a chemical change in DNA molecule that could lead to synthesis of proteins with a changed amino acid sequence.
It is caused by radiantions chemical agents or by viruses mutation be prevented by an enzyme in the cell which corrects the defect in DNA sequence.

HOPE IT HELPS ☺️