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Down's syndrome is due to trisomy of 21s...

Down's syndrome is due to trisomy of 21st chromosome caused by

A

Nondisjunction during egg formation

B

Nondisjunction during sperm formation

C

Addition of extra chromosome during mitosis of zygote

D

Either A or B

Text Solution

Verified by Experts

The correct Answer is:
D
Down.s syndrome is due to trisomy of 21st chromosome caused by non-disjunction during egg or sperm formation.
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