How does insertion or deletion of three or its multiple bases affect the reading frame in DNA?

How does insertion or deletion of three or its multiple bases affect the reading frame in DNA?
  1. It changes the reading frame from the point of insertion or deletion
  2. It results in frameshift mutations
  3. It changes one or multiple amino acids
  4. It has no effect on the reading frame

Solution

Insertion or deletion of three or its multiple bases insert or delete in one or multiple codon, and the reading frame remains unaltered from that point onwards.

Asked in: NCERT

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