EQ: What are the 4 stages in Mitosis and what happens during each stage?
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Transcript of EQ: What are the 4 stages in Mitosis and what happens during each stage?
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EQ: What are the 4 stages in Mitosis and what happens
during each stage?
Cell Division and Mitosis
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In eukaryotes, cell division happens in two stages.
1st stage: Mitosis – division of nucleus2nd stage: Cytokinesis – division of the cell
cytoplasm
Cell Division
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Genetic information is passed from one generation to the next on chromosomes.
Before cell division, each chromosome is copied.
Chromosomes
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Each chromosome consists of two identical “sister” chromatids.
Chromatids are attached by the centromere.
Chromosomes
Centromere
Sister Chromatids
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The cell cycle is the series of events that cells go through as they grow and divide.
During Interphase : A cell growsCell replicates DNA to prepare for cell division
Cell Cycle
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Biologist divide the events of mitosis into four phases:
(PMAT)ProphaseMetaphaseAnaphase Telophase
Mitosis
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The series of events that cells go through as they grow and divide is called
A. The cell cycleB. MitosisC. InterphaseD. cytokinesis
Question 1
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Prophase is the first phase of mitosis.
The centrioles separate and take up positions on opposite side of the nucleus
Spindle fibers begin forming
Chromosomes form and nucleus begins to break down
Prophase
Chromosomes(paired chromatids
Spindle forming
Centrioles
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The 2nd phase of mitosis
The chromosomes line up across the center of the cell.
Spindle fibers connect to the chromosome
MetaphaseCentriole
Spindle
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Anaphase is the third phase of mitosis
Sister chromatids separate into individual chromosomes
The continue to move unit they have formed into 2 groups
Anaphase IndividualChromosomes
Separate
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Telophase is the 4th and final phase of mitosis
Chromosomes gather at opposite ends of the cell and start to unwind.
A new nucleus forms around each group of chromosomes
TelophaseNucleus reforms
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Not a part of mitosis
During cytokinesis, the cytoplasm pinches in half.
Each new cell now has an identical set of chromosomes
Cytokinesis
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In plants, a cell plate forms in the middle of the 2 new nuclei
Cytokinesis
Cell wall
Cell plate
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The phase of mitosis during which the chromosomes line up at the center of the cell.
A. ProphaseB. MetaphaseC. AnaphaseD. Telophase
Question 2
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During mitosis, “sister” chromatids separate from one another during
A. ProphaseB. MetaphaseC. AnaphaseD. Telophase
Question 3