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12 Cards in this Set
- Front
- Back
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What is a somatic cell |
Any cell of a living organism other than the reproductive cells |
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How many pairs of chromosomes do somatic cells contain? |
23 pairs - called homologous chromosomes |
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How many sets of chromosomes do somatic cells contain? |
2 sets - called diploid cells |
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What is mitosis? |
The process in which single cells divide into two identical cells |
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What happens during interphase? |
Duplication of DNA and centrosomes |
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What happens during prophase? |
Chromosomes condense and mitotic spindle forms |
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What happens during prometaphase? |
Nuclear envelope fragments Micro tubules attach to kinetichores |
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What happens during metaphase? (Meet in the middle) |
They all line up along the metaphase plate |
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What happens during anaphase? |
Chromatids separate |
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What is telophase? |
Split apart completely after cleavage furrow |
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How does motosis happen? |
INTERPHASE- Chromatids duplicate DNA replicates PROPHASE- chromatin condenses and coils. 'Protein ropes' (micro tubules) are left behind as the chromatids head to opposite ends of the cell. METAPHASE- (longest phase) chromosomes attach to micro tubules at centromere. ANAPHASE- (away) chromosomes are split and dragged toward either end of cell. TELOPHASE- cell is restructured. Cleavage furrow cytokinesis creates two new cells. DAUGHTER CELLS CREATED half from mum half from dad |
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What is meiosis? |
Cell division that produces reproductive cells. Reduction division. 23 cells in each sperm and egg. |
