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5.Molecular Basis of Inheritance
normal
Transition type of gene mutation is caused when
A
$GC$ is replaced by $TA$
B
$CG$ is replaced by $GC$
C
$AT$ is replaced by $CG$
D
$AT$ is replaced by $GC$
Solution
(d)In transition, a nitrogen base is replaced by another of its type i.e. one purine is replaced by another purine ($A$ $\rightleftharpoons$ $G$) while one pyrimidine by another pyrimidine ($C$ $\rightleftharpoons$ $T$ or $U$).
Standard 12
Biology
