Down's syndrome is caused by:
(
This question was previously asked in
Shift 01/06/2023 3:30 PM - 6:30 PM
A
trisomy of 14th chromosome
B
trisomy of 22nd chromosome
C
trisomy of 21st chromosome
D
short arm of 23rd chromosome
Correct Answer
trisomy of 21st chromosome
Detailed Explanation
Down syndrome is a genetic condition that arises due to presence of an extra chromosome 21. Here, chromosome 21 is repeated thrice (trisomy 21), instead of showing up twice in a normal individual.
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