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Q.

A disease caused by autosomal primary nondisjunction is

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a

Klinefelter’s syndrome

b

sickle cell anaemia

c

Down’s syndrome

d

Turner’s syndrome

answer is B.

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Detailed Solution

Autosomes not separating out during gametogenesis results in one extra copy of chromosomes in one of the gametes. This causes a condition where trisomy of the chromosomes occur. This causes Down’s syndrome.

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