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8 Cards in this Set
- Front
- Back
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What is binary fission and how does it occur?
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Binary fission is the way prokaryotes reproduce.
Chromosome duplicates and one copy moves towards the opposite end of the cell as the cell elongates. Then the plasma membrane grows inward dividing cell into two daughter cells. |
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What are the three subsections of interphase and what occurs during these times?
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G1- the cell grows
S- continues to grow and copies chromosomes G2- Grows more as it completes preparations for cell division |
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Cytokinesis
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cytoplasm divides in two
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Prophase
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-chromatin fibers become more tightly coiled and folded
-nucleoli disappear -spindles form in cytoplasm |
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Prometaphase
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-nuclear envelope disappears
-microtubules emerge from centrosomes -kinetochore appear at centromeres of each sister chromatid |
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Metaphase
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-centromeres of chromosomes lined up on metaphase plate attached to spindles
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Anaphase
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-centromeres of each chromosome come apart separating chromotids
-spindles shorten and pull them apart |
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Telophase
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-cell elongation continues
-daughter nuclei appear in two poles of the cell as the nuclear envelope form around chromosomes -chromotin fiber uncoils and nucleoli reappears |
