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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
