Question

Intercalary aberrations are a part of which of the following?

(a) Deletion

(b) Addition

(c) Inversion

(d) Translocation

I had been asked this question in an international level competition.

My enquiry is from Inheritance and Variation Principles topic in portion Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Correct option is (a) Deletion

The explanation is: Intercalary aberrations are a type of deletions where there is a loss of an intercalary segment of a chromosome due to its double break. Deletions result in the loss of some segments of chromosomes which further leads to mutation.