Cell division - mitosis

Telophase

________:: chromosomes uncoil, nuclear envelope reforms, spindle fibres break down.

Interphase

________:: longest stage, cells synthesise new organelles, proteins and DNA.

Anaphase

________:: spindle fibres pull sister chromatids apart to opposite poles.

Prophase

________:: DNA condenses into chromosomes, nuclear enveloped break down, centrioles move to opposite poles.

Sister chromatids

________:: identical chromatids formed by DNA replication joined by a centromere.

Metaphase

________:: spindle fibres attach to centromeres and line sister chromosomes up at the metaphasic plate.

Interphase

longest stage, cells synthesise new organelles, proteins and DNA

Mitosis

cell division, produces two genetically identical daughter cells

Importance of mitosis

growth and repair

Stages of mitosis

interphase, prophase, metaphase, anaphase, telophase, cytokinesis

Prophase

DNA condenses into chromosomes, nuclear enveloped break down, centrioles move to opposite poles

Metaphase

spindle fibres attach to centromeres and line sister chromosomes up at the metaphasic plate

Anaphase

spindle fibres pull sister chromatids apart to opposite poles

Telophase

chromosomes uncoil, nuclear envelope reforms, spindle fibres break down

Cytokineses

division of the cell at the end of mitosis to from two new daughter cells

Sister chromatids

identical chromatids formed by DNA replication joined by a centromere

Mitosis in animal cells

occurs in all cells, cells become rounded, involves centrioles and micro filaments, spindle fibres break down before cytokinesis

Mitosis in plant cells

only meristematic cells, cells dont change shape, no centrioles of microfilaments, spindle fibres remain during cytokinesis

Consequence of uncontrolled mitosis

cancerous growths