Meiosis

Prophase IChromatin (DNA and protein) coils tightly together to form Chromosomes.

Prophase I

Prophase IHomologous Chromosomes become closely associated and exchange segments by crossing over.

Metaphase INuclear membrane disappears and spindle fibers are formed.

Metaphase ISpindle fibers attach to the centromeres as the pairs of Chromosomes line up along the metaphase plate (midline of the cell).

Anaphase IThe Spindle Fibers pull the pairs of Chromosomes away from the midline.

Anaphase IEach side of the cell ends up with a complete set of Chromosomes.

Telophase ICytokinesis occurs and a nuclear membrane appears.

Prophase IICytokinesis occurs and a nuclear membrane appears.

Metaphase IISpindle fibers attach to both sides of the Centromeres.

Anaphase IISpindle fibers contract and pull the sister Chromatids to opposite sides.

Telophase IICytokinesis occurs and nuclear membranes form.

Telophase IICytokinesis occurs and nuclear membranes form.