Which of the following might result in a human zygote with 45 chromosomes?

Question

Quizplus · Accepted Answer

An error in either egg or sperm meiotic anaphase can result in a human zygote with 45 chromosomes due to nondisjunction, which is the failure of homologous chromosomes or sister chromatids to separate during meiosis. This can result in one gamete (either the egg or the sperm) receiving an extra chromosome, resulting in an unbalanced gamete with 24 chromosomes instead of 23. When this gamete combines with a normal gamete during fertilization, the resulting zygote has 45 chromosomes instead of the normal 46.

Which of the Following Might Result in a Human Zygote