Questions: Nondisjunction may cause trisomy 21. Turner syndrome. Jacobs syndrome. Klinefelter syndrome. All answers are correct.

Nondisjunction may cause trisomy 21. Turner syndrome. Jacobs syndrome. Klinefelter syndrome. All answers are correct.
Transcript text: Nondisjunction may cause trisomy 21. Turner syndrome. Jacobs syndrome. Klinefelter syndrome. All answers are correct.
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Solution

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The answer is the last one: All answers are correct.

Explanation for each option:

  1. Trisomy 21: This is also known as Down syndrome, which is caused by nondisjunction leading to an extra chromosome 21.

  2. Turner syndrome: This condition occurs when there is a nondisjunction event resulting in a female having only one X chromosome (45, X).

  3. Jacobs syndrome: This syndrome is caused by nondisjunction leading to an extra Y chromosome in males (47, XYY).

  4. Klinefelter syndrome: This condition results from nondisjunction leading to an extra X chromosome in males (47, XXY).

Since nondisjunction can lead to all of these conditions, the correct answer is that all answers are correct.

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