Question

Describe the different types of mutation.

Answer 1

• Mutation is a phenomenon arising from alteration of DNA sequences or structure or number of chromosomes.
• Loss (deletion) or gain (insertion / duplication) of a segment of DNA results in the alteration in chromosome structure, which is called as chromosomal aberration.
• When mutation arises due to a change in single base pair of DNA, it is known as point mutation. Eg: Sickle cell anaemia.Deletion or addition of base pairs of DNA causes frame shift mutation.