MEIOSIS• Meiosis is the process that occurs in the

formation of sex cells {Sperm and egg} by which the number of chromosomes is reduced by half.

MITOSIS• The stage of the cell cycle during which

the cell’s nucleus divides into two new nuclei and one copy of the DNA is distributed into each daughter cell.

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The cell grows to its mature size, makes a copy of its DNA, and prepares to divide into two cells. Chromatin in the nucleus condenses to form chromosomes. The nuclear envelope breaks down. The chromosomes line up across the center of the cell. The centromeres split. the two chromatids separate. The chromosomes begin to stretch out and lose their rodlike appearance. A new nuclear envelope forms around each region of chromosomes. Each daughter cell ends up with an identical set of chromosomes and about half the organelles.

Before meiosis begins, every chromosome in the parent cell is copied. The chromosome pairs line up in the center of the cell. The pairs separate and move to opposite ends of the cell. Two cells from each with half of the number of chromosomes. The chromosomes with their two chromatids move to the center of the cell. Single chromatids move to opposite ends of the cell.

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