Molecular Basis of Inheritance Question 72
72. In a mutational event, when adenine is replaced by guanine, it is a case of
[2004]
(a) frame shift mutation
(b)
(b) transcription
(c) transition
(d) transversion
Show Answer
Answer : c
Hints & Solution
(c) In transition, a purine is replaced by another purine base (A with $G$ or vice-versa). In transversion, a purine is replaced by a pyrimidine base or vice-versa. Frameshift mutation is a type of mutation where the reading of codons is changed due to insertion or deletion of nucleotides. Transcription is the formation of RNA over the template of DNA.
