Political Science, asked by jhhandasingh126, 7 months ago

A form of mental retardation associated with certain physical deformities, that is caused by an extra, third chromosome on the 21st pair is known as

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Answered by sharonthomas28

0

Answer:

Trisomy 21 is also known as Down syndrome. Other examples of trisomy include trisomy 18 and trisomy 13.

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