Which of the Following Statements Regarding Down Syndrome Is TRUE

Multiple Choice

Which of the following statements regarding Down syndrome is TRUE?

A) It is due to a defect in the sex chromosomes.
B) If one identical twin has the disorder, the other twin will not have the disorder.
C) These individuals have brain shrinkage and are at risk for Alzheimer disease as they age.
D) Individuals with the disorder must be hospitalized throughout much of their lives.