tetrad
tetrad
tetrad
tetrad
tetrad
tetrad
sister chromatids (after DNA replication, but before dividing)
Tetrad
tetrad
tetrad
tetrad
The phase occurring when chromatids are separated and a visible line forms between sets of chromatids is called anaphase. During anaphase, the sister chromatids are pulled apart toward opposite poles of the cell by the spindle fibers. This separation ensures that each new daughter cell will receive an identical set of chromosomes during cell division. The formation of the visible line indicates the cleavage furrow beginning to form as the cell prepares for cytokinesis.
Two sets of sister chromatids .