An extra copy of chromosome 21 in humans causes Down syndrome cystic fibrosis HIV none of the above

asked Aug 11, 2020 87.7k views

3 votes

An extra copy of chromosome 21 in humans causes

Down syndrome
cystic fibrosis
HIV
none of the above

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6 votes

Down syndrome is the result of an extra copy of chromosome 21 in a human.

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5 votes

Answer:

Down syndrome is when there is an extra copy of chromosome 21

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