Mitosis and The Cell Cycle AP Biology

Cell Division

Cell Division Development of multicellular organisms Repair and renew cells

Cell Division Mitosis – division of the nucleus Cytokinesis – division of the cytoplasm

Chromosomes A cell’s genetic information is called its genome. DNA molecules are packaged into chromosomes.

Chromosomes Chromatin

Duplicated Chromosome Chromatids Centromere

Cell Division Mitosis – division of nucleus Cytokinesis – division of cytoplasm

Early Prophase Chromatin condenses into coiled chromosomes Centrioles separate and spindle begins to form Nuclear membrane breaks down

Late Prophase Spindle is complete Spindle fibers attach to chromosomes

Metaphase Centrioles have moved to opposite poles of the cell Chromosomes line up across the equator of the cell

Anaphase Chromosomes are pulled apart by spindle into individual chromosomes

Telophase Chromosomes gather at opposite ends of the cell Two new nuclear envelopes form Cytokinesis

Mitosis http://www.sumanasinc.com/webcontent/anisamples/biology/biology.html

Cytokinesis – division of the cytoplasm Animal Cytokinesis – creates a cleavage furrow

Plant Cytokinesis Plant create a cell plate which will develop into a cell wall.