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17 Cards in this Set
- Front
- Back
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How many stages are in a true cell cycle
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4- G1 S G2 M
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Which Phase includes G1, S, G2
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INTERPHASE
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What is the purpose of Interphase
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Duplicates DNA
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What does each step of Interphase do?
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G1- Creates Chromatin
S- Chromatin begin to coil G2- RNA & Protein are synthesized-PROOF READING PHASE- Mistakes are found and repaired |
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What phase comes after Interphase
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M- the mitotic phase
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What happens in the Mitotic Phase
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Cells divide
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What are the 4 stages of the M Phase
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1. Prophase
2. Metaphase 3. Anaphase 4 Teleophase |
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What happens in Prophase
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Mitosis begins:
The membrane around the nucleus disintegrates. DNA condenses into chromosomes, then splits into double-stranded chromatids. |
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What disappears in Prophase
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Nucleus and Nuclear envelope
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What structure moves the chromosomes to the correct location for cell division?
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Microtuble
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True or false? Centromeres are used to line up the chromosomes during metaphase.
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True
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What happens in Metaphase
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chromosomes line up in the middle of the cell
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What happens in Anaphase
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Chromatids separate towards opposite poles
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How are kinetochore and nonkinetochore microtubules defined?
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Kinetochore- attached to microtubles
Nonkinetochore- do not |
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What happens in teleophase
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The nuclei at each pole form again. The chromosomes are now separated into two identical nuclei. This is the end of mitosis.
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How many cells are there at the end of telophase?
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1- has not separated into 2 different cells yet
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What happens after Teleophase
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Cytokinesis- Cell seperates into 2 different cells
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