At which checkpoint would a cell become arrested if a chromosome was not properly aligned in the spindle?

Question

Quizplus · Accepted Answer

The checkpoint early in the mitotic phase, known as the spindle checkpoint or the M checkpoint, ensures that all chromosomes are properly aligned on the spindle apparatus before the cell progresses to anaphase. If a chromosome is not properly aligned, the cell becomes arrested at this checkpoint to prevent the formation of cells with abnormal chromosome numbers (aneuploidy). Therefore, the correct answer is C.

At Which Checkpoint Would a Cell Become Arrested If a Chromosome