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NEET2002ZoologyPrinciples of Inheritance and VariationActual

Frameshift mutation occurs when

Options

  1. Abase is subsituted
  2. Bbase is deleted or added
  3. Canticodons are absent
  4. Dnone of these.

Correct answer

B. base is deleted or added

Step-by-step solution

Frameshift mutation occurs when one or more nucleotides are either added or deleted from DNA. Example of frameshift mutation due to deletion is as follows: Original (wild type) message or reading frame CAT GAT CAT GAT CAT GAT CAT After Deletion CAT GAT ATG ATC ATG ATC AT Message out of frame

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