A disorder caused by nondisjunction of chromosome 21, resulting in a trisomy 21 child, is
A) color deficiency.
B) Down syndrome.
C) cystic fibrosis.
D) hemophilia.

Name: A disorder caused by nondisjunction of chromosome 21, resulting in a trisomy 21 child, is A) color deficiency. B) Down syndrome. C) cystic fibrosis. D) hemophilia.
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Question

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Down syndrome is caused by the presence of an extra copy of chromosome 21, a condition known as trisomy 21, which results from nondisjunction during cell division.

A Disorder Caused by Nondisjunction of Chromosome 21, Resulting in a Trisomy