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Choose the statement that correctly describes the effect of nondisjunction on chromosome number in gametes.

A. Nondisjunction in meiosis II leads to two gametes with a missing chromosome and two gametes with an extra chromosome because both cells produced in meiosis I are affected.
B. Nondisjunction in meiosis II leads to one gamete with a missing chromosome and one gamete with an extra chromosome, whereas the other two gametes are haploid because the two cells produced in meiosis I divide independently.
C. Nondisjunction in meiosis I leads to four gametes missing a chromosome because the two cells created in the first division continue to have a missing chromosome after the second division.
D. Nondisjunction in meiosis I leads to four gametes with an extra chromosome because the two cells created in the first division continue to have an extra chromosome after the second division.

Sagot :

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Final answer:

Nondisjunction in meiosis I and II leads to gametes with abnormal chromosome numbers that can impact offspring genetic makeup.


Explanation:

Nondisjunction can occur in either meiosis I or meiosis II, resulting in abnormal chromosome numbers in gametes. When it occurs in meiosis I, it leads to two gametes missing a chromosome and two gametes with an extra chromosome. On the other hand, nondisjunction in meiosis II results in one gamete missing a chromosome, one with an extra chromosome, and two with the correct chromosome number.


Learn more about Nondisjunction here:

https://brainly.com/question/793463


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