Spindle fibers form a protein structure that divides ... ready to be divided before it proceeds with division. Next, during anaphase, the chromosomes are simultaneously separated and pulled ...

Other spindle fibers do not attach to chromosomes ... only cells with correctly assembled spindles enter anaphase. The progression of cells from metaphase into anaphase is marked by the abrupt ...

Proper chromosome segregation into two future daughter cells requires the mitotic spindle to elongate in anaphase. However, although some candidate proteins are implicated in this process ...