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transition type of mutation is caused w...

transition type of mutation is caused when :

A

GC is replaced by TA

B

CG is repleaced by GC

C

AT is replaced by CG

D

At is replaced by GC

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The correct Answer is:
D
(d) in transition anitrogen base is replaced by another of its type i.e one puiine is replecred by another purine` (AharrG)` while one pyrimidine by another pyimidine `(Charr TorU)`
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