Term
| viral reproduction requires |
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Definition
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Definition
| mitosis. mitosis requires that you be a cell |
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Definition
| cells containing a virus that just waits until it can replicate again |
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Term
| bacterial reproduction: binary fission! splitting into 2 |
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Definition
-grow big and obtain lots of nutrients, energy -copy your DNA -make more ribosomes and proteins -drag the DNA to opposite ends of cell -split down the middle -repeat process |
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Term
| binary fission requires ______ but for most bacteria a _____ is not needed |
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Definition
| specialized uneven cell division |
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Definition
division of eukaryotic cells must copy DNA and make enough organelles for 2 cells and then partition them equally |
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G1 phase S phase G2 phase M phase |
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Definition
| cells doing their job. many cells never leave this stage |
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Definition
| synethis DNA and start copying organelles |
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Definition
| finish copying organelles and make sure cell is big enough |
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1.prophase 2.metaphase 3.anaphase 4.telophase 5.cytokinesis |
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Definition
| making sure everything is organized. stop expressing DNA. compress chromosomes |
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Definition
| line DNA up in middle of cell. this way each cell will get appropriate number of chromosomes (23 pairs in humans) |
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Definition
| start pulling everythign apart. DNA and organelles are taken to opposite ends of cell |
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Definition
| finish dividing everything evenly |
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Definition
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Term
| which organisms perform meiosis? |
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Definition
germline cells. organisms that must have 2 sets of chromosomes (diploid) |
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Term
| somatic (body cells) divide by |
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Definition
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Definition
-replicate chromosomes (2n=>4n) -pair the homologues together -cross over -pull homologues apart -divide into 2 seperate cells (2n) |
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Term
| # of combinations for meiosis? |
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Definition
| 2^number of chromosome pairs |
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Definition
occurs during meiosis 1 occurs at chiasma sister chromotids major mechanism of genetic recombination |
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Definition
-one 2n cell divides to form 2 1n cells -each cell only gets one copy of each chromosomes -independent assortment of chromosomes |
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