Question

In a mutational event, when adenine is replaced by guanine it is a case of
Or A mutation which substitutes one base with another purine base is called
A. Transition
B. Transversion
C. Frameshift mutation
D. Transcription

Answer 1

Correct Answer - a
a) In transition, a purine (A or G) or a pyrimidine (C or T or U) in triplet code of DNA or mRNA is replaced by its type i.e. a purine replaces puring and pyrimidine replaces pyrimidine.