Cell Division

Cell Division: Mitosis Object:Object: To study the various stages in mitotic division

In eukaryotes, cell division occurs in two major stages.In eukaryotes, cell division occurs in two major stages. The first stage, division of the cell nucleus, is called mitosis.The first stage, division of the cell nucleus, is called mitosis. The second stage, division of the cell cytoplasm, is called cytokinesis.The second stage, division of the cell cytoplasm, is called cytokinesis. Cell Division

Chromosomes Genetic information is passed from one generation to the next on chromosomes.Genetic information is passed from one generation to the next on chromosomes. Before cell division, each chromosome is duplicated, or copied.Before cell division, each chromosome is duplicated, or copied.

Chromosomes Each chromosome consists of two identical “ sister ” chromatids.Each chromosome consists of two identical “ sister ” chromatids. Each pair of chromatids is attached at an area called the centromere.Each pair of chromatids is attached at an area called the centromere. Sister chromatids Centromere

Cell Division Cell Cycle

Mitosis MitosisMitosis –Biologists divide the events of mitosis into four phases: ProphaseProphase MetaphaseMetaphase AnaphaseAnaphase TelophaseTelophase

Mitosis

Spindle forming Chromosomes (paired chromatids) Centromere Mitosis Prophase

Spindle forming Centromere Chromosomes (paired chromatids) Prophase

Centriole Centriole Spindle Metaphase

Centriole Spindle Metaphase

Individual chromosomes Anaphase

Individualchromosomes Anaphase

Nuclear envelope reforming Telophase

Telophase

Cytokinesis

Cytokinesis

Cytokinesis in Plants Cell wall Cell plate

Interphase Animal Cell Plant Cell

Prophase Animal Cell Plant Cell

Metaphase Animal Cell Plant Cell

Anaphase Animal Cell Plant Cell

Telophase Animal Cell Plant Cell