_______ is the most common genetic cause of mental retardation.
A) Fragile X syndrome
B) PKU
C) Tay-Sachs disease
D) Down syndrome
Correct Answer:
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Q39: _ are conceived when a woman releases
Q40: _ is a genetic inheritance pattern in
Q41: Vince has one of the most common
Q42: Kevin suffers from the most widely known
Q43: Prader-Willi and Angelman syndromes illustrate the concept
Q45: _ is a recessive disease that primarily
Q46: Instances in which the expression of a
Q47: Today, the average life expectancy of individuals
Q48: Most traits are a function of the
Q49: Some research suggests that fragile X syndrome
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