Biology, asked by pranotip43, 3 months ago

Down's syndrome is represented by

Answers

Answered by gurmeetkauridh1977

4

Explanation:

Trisomy 21.

About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.

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