A disorder caused by nondisjunction of chromosome 21, resulting in a trisomy 21 child, is:

Name: A disorder caused by nondisjunction of chromosome 21, resulting in a trisomy 21 child, is:
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Down syndrome is caused by nondisjunction of chromosome 21, resulting in three copies of chromosome 21 (trisomy 21). Cystic fibrosis is caused by a mutation in the CFTR gene, hemophilia is a genetic disorder related to blood clotting, and color blindness is a genetic disorder affecting color perception.

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