Rene has Down syndrome, which means that she has an extra chromosome on which chromosome pair?
A) the 7th pair
B) the 18th pair
C) the 21st pair
D) the 23rd pair

Name: Rene has Down syndrome, which means that she has an extra chromosome on which chromosome pair? A) the 7th pair B) the 18th pair C) the 21st pair D) the 23rd pair
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Question

Quizplus · Accepted Answer

As noted in the textbook, the most frequent type of Down syndrome is trisomy-21, in which an extra chromosome is attached to the 21st pair.

Rene Has Down Syndrome, Which Means That She Has an Extra