What is a classical example of point mutation?

What is a classical example of point mutation?
  1. Deletion of a large segment of DNA
  2. Rearrangement of a segment of DNA
  3. Insertion of a large segment of DNA
  4. Change of a single base pair in a gene

Solution

The example of a single base pair change in the gene for beta globin chain that results in the disease sickle cell anemia.

Asked in: NCERT

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