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VashaNatasha [74]
3 years ago
7

A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most

probable cause of the child's condition? A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most probable cause of the child's condition? One of the gametes in the mother most likely underwent nondisjunction during meiosis. The mother had a chromosomal duplication. The woman inherited this tendency from her parents. One member of the couple underwent nondisjunction in somatic cell production.
Social Studies
1 answer:
marshall27 [118]3 years ago
4 0

Answer:

The mother had a chromosomal duplication.

Explanation:

For Down syndrome, something goes wrong and you get an extra copy of chromosome 21. That means you have three copies instead of two, which leads to the signs and symptoms of Down syndrome.

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