The beginning of anaphase is indicated by which of the following processes?
A) Loss of kinetochores from the chromatids.
B) Attachment of sister chromatids to each other by cohesin.
C) Enzymatic cleavage of cohesin.
D) Disappearance of the nuclear membrane.

Question

Quizplus · Accepted Answer

Enzymatic cleavage of cohesin by an enzyme called separase is the process that triggers the beginning of anaphase by releasing the sister chromatids from each other. This allows them to be pulled towards opposite poles of the cell by the spindle fibers. Loss of kinetochores from the chromatids happens during telophase, while attachment of sister chromatids to each other by cohesin occurs during prophase and metaphase. Disappearance of the nuclear membrane occurs during prometaphase.

The Beginning of Anaphase Is Indicated by Which of the Following