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and Are the Two Birth Defects That Occur

Question 28

Multiple Choice

________ and ________ are the two birth defects that occur when the neural tube fails to close 27 days after conception.

A) Down syndrome; Tay-Sachs disease
B) Trisomy 13; trisomy 18
C) Spina bifida; anencephaly
D) ADHD; autism

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