In Down syndrome,
A) as the age of the mother increases, the chance of the defect occurring in the unborn children increases.
B) the age of the father usually has an equal influence on the defect.
C) most embryos abort before complete term.
D) a person with the defect cannot have a normal child.
E) 80% of trisomic 21 babies are born to women over the age of 40.
Correct Answer:
Verified
Q111: Nondisjunction involving the X chromosomes may occur
Q112: The chromosome composition of 1 in 1,000
Q113: Down syndrome involves trisomy of chromosome number
A)
Q114: Which of the following designates a human
Q115: Which of the following is NOT true
Q117: The sex chromosome composition of a person
Q118: Males who tend to be taller than
Q119: Down syndrome is associated with
A) mental retardation.
B)
Q120: Males with low fertility, abnormally small testes,
Q121: Classification. Answer the questions in reference to
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