Which term denotes the genetic condition caused by the presence of an extra copy of chromosome 21?

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Multiple Choice

Which term denotes the genetic condition caused by the presence of an extra copy of chromosome 21?

Explanation:
Having an extra copy of chromosome 21 means there are three copies of that chromosome in each cell. This genetic imbalance is called trisomy 21, and the condition named for it is Down syndrome. Down syndrome is a genetic condition that commonly involves differences in development and health, with a wide range of abilities among individuals. The other terms don’t describe a genetic condition caused by an extra chromosome: adaptive functioning refers to daily living skills, chromosome 21 is just the chromosome itself, and inclusive education is a teaching approach.

Having an extra copy of chromosome 21 means there are three copies of that chromosome in each cell. This genetic imbalance is called trisomy 21, and the condition named for it is Down syndrome. Down syndrome is a genetic condition that commonly involves differences in development and health, with a wide range of abilities among individuals. The other terms don’t describe a genetic condition caused by an extra chromosome: adaptive functioning refers to daily living skills, chromosome 21 is just the chromosome itself, and inclusive education is a teaching approach.

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