If the normal spermatogenesis is disrupted, the gametes can have different chromosomes than expected. Which of the following is the most likely cause of one of the four gametes having two X chromosomes and one having neither an X nor a Y chromosome?
Nondisjunction of the chromosomes during meiosis I
Nondisjunction of both the X and Y chromosomes during meiosis II
G
Nondisjunction of the Y chromosome during meiosis II
Nondisjunction of the X chromosome during meiosis II

Nondisjunction of the X chromosome during meiosis II

Explanation:

Nondisjunction refers to the failure of homologous chromosomes and/or sister chromatids to separate during the process of cellular division. This phenomenon leads to daughter cells with aneuploidies, i.e, cells that have an abnormal number of chromosomes. In this case, non-disjunction of the X chromosome during spermatogenesis will lead to gametes having two X chromosomes and gametes without this sex chromosome.

explanation:

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