If a married couple has a baby with Down syndrome, what might be the possible reason for that?
A
Young age of the mother
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B
Old age of the mother
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C
Age does not play an important role
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D
Father might be affected with Down syndrome
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Solution
The correct option is B Old age of the mother A woman's chance of delivering a baby with Down syndrome increases with the increasing age, as the risk of improper chromosome division increases. Women will have higher risk of child with Down syndrome if they conceive a baby after 35 years of age.
Father cannot be affected with Down Syndrome as men with this disorder are infertile.