Down syndrome is caused by
A) improper migration of brain cells during brain development.
B) an inherited faulty gene.
C) a genetic error in which a vital enzyme is missing in the brain.
D) the presence of an extra twenty-first chromosome.
E) obstetric difficulties at the time of birth.
Answer: D
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Answer the following statement true (T) or false (F)
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Answer the following statement true (T) or false (F)
Because of their focus on money for all, collectivist countries have greater wealth than do individualistic countries
a. True b. False
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