Question

What is the substitution of a purine base with a pyrimidine base known as?

(a) Deletion

(b) Transition

(c) Addition

(d) Transversion

I got this question in an interview for internship.

I'm obligated to ask this question of Inheritance and Variation Principles in section Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Right option is (d) Transversion

To elaborate: The substitution of a purine base with a pyrimidine base or vice versa is known as transversion. This refers to the substitution mutation which is the replacement of one base by another.