UPSC CSE Prelims
Question 67
In the context of recent advances in human reproductive technology, 'Pronuclear Transfer’ is used for
View correct answer and explanation
Correct answer: D
Correct Option: D (Prevention of mitochondrial diseases in offspring)
Explanation: Pronuclear transfer is mitochondrial replacement: parental pronuclei are moved into a donor egg with healthy mitochondria to reduce transmission of mitochondrial DNA disorders.
Option-wise Analysis:
A. Incorrect - Ordinary IVF with donor sperm does not describe pronuclear transfer.
B. Incorrect - Changing sperm-forming cells is genome editing, not this egg/zygote replacement procedure.
C. Incorrect - Making embryos from stem cells is a different research technology.
D. Correct - the procedure is designed to prevent inherited mitochondrial disease transmission.