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NEET2004ZoologyPrinciples of Inheritance and VariationActual

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

Options

  1. Aframe shift mutation
  2. Btranscription
  3. Ctransition
  4. Dtransversion

Correct answer

C. transition

Step-by-step solution

Point mutations are those mutations that affect a single base pair. The most common nucleotide mutations are substitutions, in which one base is replaced by another. These can be of two types, either transitions or transversions. Transition substitution refers to a purine or pyrimidine being replaced by a base of the same kind; for example, a purine such as adenine may be replaced by the purine guanine. Transversion substitution refers to a purine being replaced by a pyrimidine, or vice versa; for example, cytosine

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