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REAL WORLD BIOCHALLENGE

Several human genetic disorders result from nondisjunction in meiosis, including Down syndrome, Klinefelter's syndrome, and Turner syndrome. Visit bdol.glencoe.com to investigate these disorders.

1. What characteristic is common to each disorder?

2. Choose one of these disorders, or another human disorder caused by nondisjunction, and prepare a visual display that explains the disorder.

3. Explain the disorder to your class.



Answer :

GinnyAnswer

Final answer:

Down syndrome is caused by nondisjunction of chromosome 21, resulting in physical and cognitive abnormalities.


Explanation:

Down syndrome is a genetic disorder caused by nondisjunction of chromosome 21, resulting in the presence of an extra copy of this chromosome. This leads to characteristic physical features, intellectual disabilities, and various health issues in individuals affected by this condition. The risk of Down syndrome increases with maternal age due to the higher likelihood of nondisjunction events during meiosis.


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