An individual with an extra chromosome on the 21st pair of chromosomes has _____.
A) Down syndrome
B) nearsightedness
C) fragile X syndrome
D) Tourette syndrome

Name: An individual with an extra chromosome on the 21st pair of chromosomes has _____. A) Down syndrome B) nearsightedness C) fragile X syndrome D) Tourette syndrome
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Question

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An extra chromosome on the 21st pair of chromosomes is also known as trisomy 21, which results in Down syndrome.

An Individual with an Extra Chromosome on the 21st Pair