Question

Substitution of a purine base with a pyrimidine base or vice-versa is called
Options:(a)Transversion(b)Transition(c)Deletion(d)Inversion

Answer 1

Explanation:

Substitution of purine base for a pyrimidine base or substitution of pyrimidine base for a purine base is called as transversion. Hence, adenine is replaced with thymine/ uracil and guanine with cytosine which makes option B correct.