While looking under a microscope, you see two neighboring daughter cells. One of the cells contains three chromosomes, and the other contains five. The diploid number of chromosomes in this type of cell is 4. What could be the reason for the different number of chromosomes in the cells?
A) The division of sister chromatids of one chromosome did not occur properly during mitosis.
B) The nuclear envelope did not dissolve, so mitosis could not occur at all.
C) Replication of DNA did not occur properly.
D) The division of homologous chromosomes during meiosis II did not occur properly.

Question

Quizplus · Accepted Answer

The division of sister chromatids of one chromosome did not occur properly during mitosis, leading to an unequal distribution of chromosomes between the two daughter cells. This is a plausible explanation for the observed difference in chromosome number, given that the process involved is mitosis, where sister chromatids should be equally divided between two daughter cells.

While Looking Under a Microscope, You See Two Neighboring Daughter