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UPSC PYQPrelims 2020

Civil Services Examination · Question 37

In the context of recent advances in human reproductive technology, "Pronuclear Transfer" is used for

  1. fertilization of egg in vitro by the donor sperm
  2. genetic modification of sperm producing cells
  3. development of stem cells into functional embryos
  4. prevention of mitochondrial diseases in offspring
Show answer & explanation

Answer: (D) prevention of mitochondrial diseases in offspring

Explanation

Pronuclear transfer moves the pronuclei from a fertilised egg with faulty mitochondria into a donor egg with healthy mitochondria to prevent mitochondrial disease.