Dna Biology

February 28, March 1 Meiosis leads to the business of sperm and ballgametes Mitosis leads to the production of somatic cells personate belonging Mitosis and Cell fixture recurrence Growth- trillions of genetically identical cells that suffer up our body Wound repair- scrape, mitosis and cytokinesis generate cells that repair your skin Reproduction- production of genetically identical cells chromo approximately consists of a single DNA that is wrapped some proteins . Interphase vs Mitosis phase Interphase is an kl active time; cell is either increment and preparing to ramify or fulfilling its spi,./ecialized its specialized function in a cellular individualnondividing pahse M phase- dividing phase S pahse- reproductive memory of genetic fabric is separated Control of the cell bike Before cells enter M, phase, there is a regulative whit that helps cells go into M phase from G2 phase. The regulatory molecule is called MPF Mitosis Promoting performer Made u p of 2 distinct polypeptide subunits Protein Kinase- and enzyme that catalyzes the carry-over of phosphate group from ATP to a target protein--CDK So MPF phosphorylates a protein that triggers mitosis Other subunit is called Cyclin MPF is in mad by phosphorylation at two sites and is activated by dehosphorylation at one site.

Checkpoints cell cycle defy G1 checkpoint- Size, if the cells are too small the its daughter cells usage be fucked so it habitude return the checkpoint Availability of nutrients- if not nutrients it wont replicate Social signals- the pass or dont pass through g1 phase in response to former(a) cells vilify to P53- If Dna ! is discredited, then the protein p53 activates apoptosis G2 Checkpoint- if DNA is damaged or chromosomes are not replicated correctly then MPFs dephosphorylation is blocked Final Checkpoint- Metaphase checkpoint If not all chromosomes are devoted properly to the spindle apparatus, M phase arrests at metaphase. G1 in like manner prevents the growth of mature cells by putting them into a g0...If you insufficiency to get a adept essay, order it on our website: OrderCustomPaper.com

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