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17 Cards in this Set
- Front
- Back
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Gametes
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Special cells used in sexual reproduction
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Gametes contain...
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1/2 the number of normal chromosomes that regular body cells do
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Meiosis
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the process which occurs in the cells of reproductive organs
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What happens before Meiosis occurs?
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The cell duplicates it's chromosome
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Prophase I
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chromatid pairs pair up with their homologous chromosomes from a tetrad
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Tetrad
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2 orginal homologous chromosomes and their duplicates
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What phase does crossing over occur?
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Prophase I
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Metaphase I
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Tetrads line up along the center of the cell
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Anaphase I
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the tetrads split and move to the opposite direction
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What happens to the chromatid pairs in Anaphase I
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move away from each other
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Telophase I
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2 cells form containin a complete set of shomosomes in the form of chromatid
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Prophase II
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the chromatid pairs toward the center of the cell
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Metaphase II
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the chromatid pairs line up along the center of the cel
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Anaphase II
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the chromatid pairs split moving the individual chromosomes toward the opposite poles
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Telophase II
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each of the 2 cells will begin to split in 1/2 and produce 2 more cells TOTAL 4
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Spermalogenisis
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when meiosis occurs in the testes of males
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Oogenesis
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when meiosis occurs in the ovaries of females
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