Meiosis

Prophase I

• Pair of duplicated chromosomes
• Spindle fibers
• Centrioles
• Nuclear membrane

Metaphase I

• Duplicated chromosome line up in the center of the cell.
• The centromere of each chromatid pair becomes attached to spindle fibers.

Anaphase I

• The homologous chromosomes separate and move to opposite poles of the cell.

Telophase I

• Spindle fibers break down.
• Chromosomes uncoil and form a nuclei.
• Cells divide.

Meiosis II

Prophase II

• Chromosomes condense
• Spindles form in each new cell
• Spindle fibers attach to chromosomes.

Metaphase II

• Centromeres of chromosomes line up randomly at the equator of each cell

Anaphase II

• Centromeres split
• Chromatids separate and move to opposite poles

Telophase II

• Spindle fibers disappear
• Nuclear membrane forms around each set of chromosomes