The Cell Cycle Growth and Division

In the Nucleus Chromatin – lots of DNA, long string like strands Sister Chromatids Centromere Chromosome – carry genetic material, DNA Chromatin – lots of DNA, long string like strands

Spindle Fibers and Centrioles

Duplicates Chromosomes Inter phase This is the Growth part The cell gets bigger Prepares for Division Busiest phase Duplicates Chromosomes

Mitosis Result …to produce identical complete set of chromosomes two “daughter” cells identical complete set of chromosomes

Prophase Happens First Chromatin Coils Nuclear envelope starts to disappear Chromatin Coils Forming Chromosomes With two identical halves Called Sister Chromatids That are held together in the middle by Centromeres

Metaphase Second The doubled Chromosomes move to the center of the cell centrioles are at opposite sides of the cell spindle fibers appear

Anaphase Third centromeres split sister chromatids of each chromosome pull away …spindle fibers help

Telophase Last, fourth phase Nuclear envelope reforms chromatids move to opposite sides of the cell…2 nuclei form around each A new cell membrane forms to split into 2 individual cells, cytokinesis