Meiosis

Prophase 1

The nuclear membrane disintegrates and crossing over occurs

Metaphase 1

The tetrads attach to spindle fibers at their centromeres and line up at mid-cell

Anaphase 1

The cell membrane begins to constrict and the tetrads separate

Telophase 1

Nuclear membranes enclose the separated chromatids and 2 diploid cells are produced

Prophase 2

The DNA begins to condense and each chromosome pair has a centrosome

Metaphase 2

The chromatids line up at the mid-cell and the centrioles are at the poles

Anaphase 2

The chromosomes split and move to opposite sides of the cell

Telophase 2

4 haploid cells are produced and each cell has half the number of chromosomes of the parent cell