Multiple Choice
To produce an individual with Down syndrome (47,+21) ,
A) a nondisjunction event must have occurred during spermatogenesis.
B) more than one sperm must have been involved in fertilization.
C) a nondisjunction event must have occurred during oogenesis.
D) this must have been caused by uniparental disomy.
E) a nondisjunction event could have occurred during spermatogenesis or oogenesis.
Correct Answer:

Verified
Correct Answer:
Verified
Q32: What kinds of chromosomal defects invariably result
Q33: Amniocentesis<br>A) involves removal of fluid and cells
Q34: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6382/.jpg" alt=" -The p arm."
Q36: What is considered the main risk factor
Q38: Structural changes in chromosomes never lead to
Q39: Turner syndrome involves monosomy of the Y
Q40: Under what circumstances might a couple consult
Q41: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6382/.jpg" alt=" -The location of
Q42: This test requires growing the isolated cells
Q137: Match the following:<br>-Klinefelter syndrome<br>A)takes the form of