The beginning of anaphase is indicated by which of the following events?
A)loss of kinetochores from sister chromatids
B)enzymatic cleavage of cohesin
C)joining of the sister chromatids to each other by cohesin
D)polymerization of spindle microtubules

Question

Quizplus · Accepted Answer

Anaphase is initiated by the enzymatic cleavage of cohesin, which allows the sister chromatids to separate and move towards opposite poles of the cell. Loss of kinetochores occurs during late anaphase, after the sister chromatids have already separated. Joining of sister chromatids by cohesin occurs during prophase and metaphase. Polymerization of spindle microtubules occurs throughout mitosis and is necessary for the proper formation and organization of the spindle apparatus.

The Beginning of Anaphase Is Indicated by Which of the Following