If nondisjunction occurs in meiosis II during gametogenesis, what will be the result at the completion of meiosis?
A)All the gametes will be diploid.
B)Half of the gametes will be n + 1, and half will be n - 1.
C)1/4 of the gametes will be n + 1, 1/4 will be n - 1, and 1/2 will be n.
D)There will be three extra gametes.
E)Two of the four gametes will be haploid, and two will be diploid.

Question

Quizplus · Accepted Answer

Nondisjunction in meiosis II during gametogenesis will result in 1/4 of the gametes having an extra chromosome (n + 1), 1/4 of the gametes missing a chromosome (n - 1), and 1/2 of the gametes being normal (n). This is because in meiosis II, the sister chromatids separate, and if nondisjunction occurs, one gamete will receive both sister chromatids, while the other gamete will receive none. Therefore, the resulting gametes will have an imbalance in chromosome number.

If Nondisjunction Occurs in Meiosis II During Gametogenesis, What Will