chapter_12 - Meiosis and Alternation of Generations Outline...

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Meiosis and Alternation of Generations
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Outline Asexual Reproduction Sexual Reproduction Meiosis Meiosis I Meiosis II Alternation of Generations
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Asexual vs. Sexual Reproduction Asexual Reproduction One parent Genetic makeup of offspring is identical to parent Sexual Reproduction Two parents Genetic makeup is usually different from either parent
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Asexual vs. Sexual Reproduction
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Mitosis vs. Meiosis Mitosis No pairing One stage Results in two diploid cells Meiosis Pairing in prophase 1 Two stages Results in four haploid cells
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Meiosis Meiosis I Prophase I - Chromosomes condense and pair up as homologous chromosomes - Nuclear envelope disappears - Spindle fibers form - Crossing-over may occur
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Crossing Over
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Meiosis Metaphase I - Chromosomes align in pairs at equator Anaphase I - Chromosomes from each pair migrate to a poles
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Meiosis Telophase I - Two new haploid cells form, each cell entering stage 2
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Meiosis Meiosis II Prophase II
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This note was uploaded on 04/03/2008 for the course BIOL 1411 taught by Professor Veazey during the Spring '08 term at Southwest Texas Junior College.

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chapter_12 - Meiosis and Alternation of Generations Outline...

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