Which of the following abnormalities correlates most strongly with the mother’s physiological state at the moment of conception?
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Answer: C. Down’s syndrome
Explanation
Down syndrome is a chromosomal abnormality strongly correlated with advanced maternal age at conception. Older mothers face a significantly higher statistical probability of conceiving children with Down syndrome. Maternal physiological age during conception directly impacts the likelihood of this genetic disorder. Down syndrome results from the presence of an extra copy of chromosome twenty-one. Meiotic nondisjunction during egg cell formation occurs more frequently in older women. Genetic counseling provides prospective parents with accurate risk assessments based on maternal age.
Prenatal screening tests help obstetricians detect chromosomal abnormalities during early stages of pregnancy. Healthcare systems offer specialized support and early intervention programs for children with Down syndrome. Understanding genetic risk factors allows families to make informed reproductive health decisions. Oxygen deprivation during birth results from delivery complications rather than maternal conception age. Fetal alcohol syndrome is caused by maternal alcohol consumption during pregnancy periods. Prenatal smoking introduces harmful toxins into circulation during fetal development stages.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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