Cell Division Mitosis. Chromosomes Eukaryotes Found in the nucleus Contain most of the genes ...
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Transcript of Cell Division Mitosis. Chromosomes Eukaryotes Found in the nucleus Contain most of the genes ...
Cell Cell DivisionDivision
MitosisMitosis
ChromosomesChromosomes EukaryotesEukaryotes Found in the Found in the
nucleusnucleus Contain most of Contain most of
the genesthe genes Made up of two Made up of two
sister sister chromatids, chromatids, joined by a joined by a centromerecentromere
ProkaryotesProkaryotes Found in the Found in the
cytoplasmcytoplasm Contains most of Contains most of
the genesthe genes Made up of a Made up of a
circular single circular single strandstrand
Plasmid contains Plasmid contains additional genesadditional genes
Cell CycleCell Cycle InterphaseInterphase
MitosisMitosisProphaseProphaseMetaphaseMetaphaseAnaphaseAnaphaseTelophaseTelophase
G0
InterphaseInterphase
Synthesis of Synthesis of organelles organelles necessary for necessary for cell division cell division (centrioles)(centrioles)
Chromosomes Chromosomes replicatereplicate
Growth and Growth and developmentdevelopment
G2(Gap 2)G2(Gap 2)S(synthesiS(synthesis)s)
G1(Gap 1)G1(Gap 1)
ProphaseProphaseChromosomes condense, Chromosomes condense,
become visiblebecome visibleMitotic spindles begin to form in Mitotic spindles begin to form in
the cytoplasm (microtubules)the cytoplasm (microtubules)Nuclear membrane and Nuclear membrane and
nucleolus break downnucleolus break down
ProphaseProphaseChromosomes attach to the Chromosomes attach to the
spindle fibers at the spindle fibers at the centromeres.centromeres.
Chromosomes start to move Chromosomes start to move towards the center of the cell.towards the center of the cell.
MetaphaseMetaphaseChromosomes are lined up in the Chromosomes are lined up in the
middle of the cell.middle of the cell. Imaginary line is called the Imaginary line is called the
metaphase plate.metaphase plate.
AnaphaseAnaphaseCentromeres divideCentromeres divideSister chromatids are pulled Sister chromatids are pulled
apart to opposite ends of the apart to opposite ends of the cell.cell.
Each pole of the cell now Each pole of the cell now contains identical copies of contains identical copies of chromosomes.chromosomes.
TelophaseTelophase Nuclear envelopes form around each Nuclear envelopes form around each
set of chromosomesset of chromosomes Chromosomes uncoil.Chromosomes uncoil. Cytokinesis - equal distribution of the Cytokinesis - equal distribution of the
cytoplasm between the two daughter cytoplasm between the two daughter cells.cells.
1 - prophase2 - metaphase3 - anaphase4 - telophase5 - interphase (cell is not in mitosis)
End result of MitosisTwo identical daughter cells
Diploid = 2n
Diploid = 2n