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JIPMER2015ZoologyMolecular Basis of Inheritance

In a mutational event, when adenine is replaced by guanine, it is a case of

Options

  1. Aframeshift mutation
  2. Btranscription
  3. Ctransition
  4. Dtransversion

Correct answer

C. transition

Step-by-step solution

Transition are substitution gene mutation in which a purine (adenine) is replaced by another purine (guanine) or a pyrimidine (thymine is replaced by another pyrimidine cytosine). Change of codon ATC to GTC or ATT or ACC is an example of transition. Transversion in substitution gene mutation in which a purine ( A or G ) is replaced by a pyrimidine (T or C) or vice-versa.

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