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21 Cards in this Set
- Front
- Back
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Interphase
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consists of G1, S, and G2 phase
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G1 phase
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a period of intense growth
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S phase
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replication of DNA
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G2 phase
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phase when the cell continues to grow and complete preparations for cell division
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the longest phase of mitosis
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prophase
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shortest phase of mitosis
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anaphase
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when cells stop dividing they enter a stage called the
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G0 phase
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anchorage dependence
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to divide, an animal cell must be attatched or anchored to some surface
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metastasize
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when cancer cells are able to migrate to other regions of the body
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why is synapsis important
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1) ensures that each daughter cell will receive one homologue from each parent
2) makes crossing over possible |
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synapsis
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when each chromosome pairs up precisely with its homologue
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tetrad
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structure formed from synapsis
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crossing over
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homologous chromatids exchange genetic material
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chiasmata
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the visible "X" formed from the crossing over of homologues
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the longest phase of prophase
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meiosis 1
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independent assortment of chromosomes
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during meiosis, homologous pairs of chromosomes separate depending on the random way in which they line up on the metaphase plate during meiosis 1
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recombinant chromosomes
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combine genes inherited from both parents
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crossing over produces
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recombinant chromosomes
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cell cycle control system
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regulates the rate at which cells divide
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the restriction point
-why is it so important |
G1 checkpoint
-most important one in mammals because if it receives the go-ahead, the cell will most likely complete cell division |
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timing of cell division is controlled by 2 kinds of molecules
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cyclins and cyclin dependent kinases
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