Which of the following abnormalities is most likely related to the mother's condition at the time of conception?
Correct answer: C. Down's syndrome
- A. oxygen deprivation during prenatal development
- B. fetal alcohol syndrome
- C. Down's syndrome
- D. prenatal smoking
Explanation
Down syndrome commonly results from chromosomal nondisjunction, and the risk is associated particularly with maternal age at conception. The other choices describe harmful prenatal exposures or complications during pregnancy rather than a condition specifically linked to conception.
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