A group of symptoms called Down syndrome results from trisomy:
A) 15.
B) 19.
C) 21.
D) 23.

Question

Quizplus · Accepted Answer

Down syndrome is caused by trisomy 21, which means that there is an extra copy of chromosome 21. This results in developmental delays, intellectual disability, and characteristic physical features such as slanted eyes and a flattened facial profile. Trisomy 15, 19, and 23 can also occur, but they do not result in the same set of symptoms as Down syndrome.

A Group of Symptoms Called Down Syndrome Results from Trisomy