Which of the following is incorrect. Trisomy 21
A) is only one of several examples of an abnormal number of autosomes that is compatible with life beyond the first five years
B) is caused by nondisjunction
C) is caused by having three copies of chromosome 21
D) occurs in 1 out of 10,000 births
E) is associated with paralysis of limbs

Question

Quizplus · Accepted Answer

Trisomy 21 is not associated with paralysis of limbs. It is a genetic disorder caused by having three copies of chromosome 21, instead of the usual two copies. It is also known as Down syndrome and occurs in approximately 1 out of 700 births. While it is typically associated with intellectual disability and certain physical features, it is not associated with paralysis of limbs.

Which of the Following Is Incorrect. Trisomy 21