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Edwards syndrome, also known as trisomy 18, is typically caused by a random error in cell division that results in an extra chromosome 18. This chromosomal abnormality can occur in either the mother or father, but it is more commonly associated with maternal age, as older mothers have a higher risk of chromosomal abnormalities during egg formation. Neither parent "carries" the syndrome in a hereditary sense, as it is usually not inherited but rather occurs as a sporadic event during conception.

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1w ago

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