Which of the Following Might Result in a Human Zygote

Question

Which of the following might result in a human zygote with 45 chromosomes?
A)an error in either egg or sperm meiotic anaphase
B)failure of the egg nucleus to be fertilized by the sperm
C)fertilization of a 23-chromosome human egg by a 22-chromosome sperm of a closely related species
D)an error in the alignment of chromosomes on the metaphase plate
E)lack of chiasmata in prophase I

Accepted Answer

An error in meiotic anaphase can result in one gamete receiving an extra copy of a chromosome, resulting in a total of 45 chromosomes when combined with a normal gamete during fertilization.