The pairs of chromosomes that have been replicated are called sister chromatids, and they remain joined at a central point called the centromere. A large structure called the mitotic spindle also ...

This checkpoint operates just before the sister chromatids separate and involves ... striking features of this model is its asymmetric structure in which the proteins on the outside form a wall ...

As long as they remain attached to each other the two identical copies of the chromosome are known as sister chromatids. The separated sister chromatids are now known as chromosomes. Their DNA ...