A) chromosome no. increase in 21st pair autosome
B) chromosome no. decrease in 21st pair autosome
C) chromosome no. increase in 18th pair autosome
D) chromosome no. decrease in 18th pair autosome
Correct Answer: A
Solution :
Downs syndrome (or mongolism) is a congenital disorder of people which is caused by the trisomy y of chromosome 21.You need to login to perform this action.
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