cell cycle
DESCRIPTION
Cell Cycle. There are 3 parts of Interphase: G1 - The cell grows S - The cell copies its DNA (synthesis) G2 - The cell checks its systems before dividing. Interphase. MITOSIS. Start with one cell - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/1.jpg)
![Page 2: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/2.jpg)
![Page 3: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/3.jpg)
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Cell Cycle
![Page 8: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/8.jpg)
Interphase
• There are 3 parts of Interphase:– G1 - The cell grows– S - The cell copies its DNA (synthesis)– G2 - The cell checks its systems
before dividing
![Page 9: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/9.jpg)
MITOSIS
• Start with one cell• Ends with two new cells that are identical to the
original cell (with the same number of chromosomes)• New cells are called daughter cells
![Page 10: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/10.jpg)
![Page 11: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/11.jpg)
Cell Cycle
![Page 12: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/12.jpg)
CANCERuncontrolled cell division
![Page 13: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/13.jpg)
Meiosis
• Meiosis is a special process of cell division that results in the formation of gamete cells (sperm and egg)
• Each gamete cell has only half the number of chromosomes as the original parent cell.
![Page 14: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/14.jpg)
![Page 15: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/15.jpg)
Principles of Meiosis
• Independent Assortment – chromosomes separate into gamete cells “independently” of each other. The result is that each gamete cell has a different set of the parent’s chromosomes.
• Crossing Over – chromosomes can trade genes among themselves, so that a gene on one chromosome can end up on a different chromosome.
![Page 16: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/16.jpg)
Independent Assortment
![Page 17: Cell Cycle](https://reader035.vdocuments.us/reader035/viewer/2022062802/5681463f550346895db3488f/html5/thumbnails/17.jpg)
Crossing Over