4.Principles of Inheritance and Variation
normal

Down's syndrome occurs in the ........... pair of chromosome by increasing a chromosome.

A

$22^{th}$

B

$21^{th}$

C

$7^{th}$

D

$23^{rd}$

Solution

Solution is Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Standard 12
Biology

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