Question

Given is the representation of a kind of chromosomal mutation. What is the kind of mutation represented?

a. Deletion
b. Duplication
c. Inversion
d. Reciprocal translocation

Answer 1

Hint: Chromosomal mutation is the sudden change caused by any mutants or carcinogen materials or by some irreversible change due to which the mechanism occurring normally is affected and causes various new changes in phenotype, genotype of the organism, mutation can occur when mutants are induced in the body, it can be some specific rays or in a gas form such as mustard gas.

Complete answer:
- In the deletion process, one base or more than one bases are deleted.
- On the place, no new bases are added that cause a vacant place on that portion.
- Deletion can be monosomy, nullisomy etc.
- In duplication one base pair get to add one or more than one pair causes the one pair of chromosome previously linked or bind to other strand left open, this changes the whole base pairing of the strand
- Inversion is a process where one two or more base pairs get shifted to the new place and base allotted to that new place is shifted on the place of the base from which it is substituted.
- Inversion can occur between two, five or more base pairings.
- Reciprocal translocation means when the base pair is substituted with the broken other chromosomes, a translocation between bases of different chromosomes occur.
- With reference, the most appropriate answer is an inversion.

Hence, the correct answer is option (C).

Note: Chromosomal mutations such as deletion, duplication and other events result in various autosomal and sex-linked diseases such as haemophilia, sickle cell anaemia, down’s syndrome. These can be treated with some specific medication or kind of therapy. These are inherited diseases from which few can be passed on to other individuals.