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5.Molecular Basis of Inheritance
normal
In a mutational event, when adenine is replaced by guanine, it is a case of
A
Transition
B
Transversion
C
Frameshift mutation
D
Transcription
(AIPMT-2004)
Solution
(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 purine and pyrimidine replaces pyrimidine.
Standard 12
Biology
