CC&M+Anaphase

CC&M

= ANAPHASE =

Anaphase is the third stage in cell division.

This stage begins when the two centromeres of each chromosome come apart, seperating the sister chromatids. Once they're seperate, each sister chromatid is considered a full-fledged daughter chromosome.

Motor proteins of the kinetochores, powered by ATP, 'walk' the daughter chromosomes along the microtubules toward opposite poles of the cell, centromere first. The spindle microtubules attatched to the kinetochores shorten during this time. On the other hand, the spindle microtubules not attatched to chromosomes lengthen.

The poles are moved farther apart, making the cell longer. This stage is completed when the collections of chromosomes have reached the two poles of the cell.