Class 12 NEET Biology Molecular Basis of Inheritance Questions Part 1

Transition mutant is one in which a purine is substituted by a different purine, or a pyrimidine by a different pyrimidine. Such a change involves a base pair change between a G−C pair and an A−T pair in the DNA whereas transversion results when one nitrogen base is replaced by another different type e.g. C-G and A-T. Transcription is the formation of m RNA