In human beings, there are 23 pairs of chromosomes. Down’s syndrome disorder is concerned with chromosome number _____?
انسانوں میں ، کروموسوم کے 23 جوڑے ہیں۔ ڈاؤن سنڈروم ڈس آرڈر کا تعلق کروموسوم نمبر _____ سے ہے؟
Answer: 21
Explanation
A person with Down's syndrome has three copies of chromosome 21 instead of the normal two.
It leads to developmental and intellectual delays.
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