What happens when there is an extra, or third, chromosome on the 21st chromosome pair? The baby will be born with Down syndrome. The baby will be male. The baby will be born with cystic fibrosis. The baby will be female.

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When there is an extra, or third, chromosome on the 21st chromosome pair the baby will be born with Down syndrome.

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Asked 3/8/2015 5:32:18 PM

Updated 3/10/2015 11:31:47 AM

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bel007

A child’s self-esteem seem to reach a low point at age of 12 or 13.

Added 3/7/2015 2:55:48 PM

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