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What kind of cell did we start with in mitosis?
Meiosis Definition: What was our definition for meiosis? Reduction division prefix mei means: to lessen Meiosis Basics process used by sexually reproducing organisms to form gametes or sex cells What kind of cell did we start with in mitosis? beginning cell is called a “germ cell” Somatic diploid cell A germ cell is specialized diploid cell cell end products are called “gametes” or sex cells
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What kind of cells are gametes, haploid or diploid?
Meiosis GAMETES Let’s talk about sex cells or gametes eggs female gametes are called ___________ sperm or pollen male gametes are called __________________ meiosis gametogenesis formation of gametes is called _________________ oogenesis formation of eggs: _________________ spermatogenesis formation of sperm: _________________ What kind of cells are gametes, haploid or diploid? all gametes are haploid cells or “n” cells
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Meiosis Meiosis Basics con’t Germ Cell
Is this cell diploid or haploid? 2n n Meiosis I n Are these cells diploid or haploid? n n n n Meiosis II
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Meiosis 46 23 23 23 23 23 23 Human Meiosis
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Let Review, What are the stage of Mitosis?
Meiosis Stages of Meiosis Let Review, What are the stage of Mitosis? Meiosis I Meiosis II Interphase I Interphase II Early Prophase I Early Prophase II Late Prophase I Late Prophase II Metaphase I IPMATI I Metaphase II Interphase Anaphase I Anaphase II Early Prophase Telophase I IPMATI Telophase II Late Prophase IPMATI II Metaphase Anaphase Telophase
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Meiosis Meiosis Overview
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Meiosis spermatogenesis oogenesis
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Meiosis Category Mitosis Meiosis
Compare and Contrast Mitosis and Meiosis Category Mitosis Meiosis Nickname starting cell Starting cell (n or 2n) cells produced cells produced (n or 2n) # of cells produced Names of stages Normal cell division Reduction division somatic germ 2n 2n somatic gametes n 2n two four IPMATI IPMATI I IPMATI II
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Meiosis: The video The Circle of Life 23 n n 23 46 2n 2n 2n 46 46 23
fertilization 46 zygote 2n mitosis 2n 2n meiosis 46 46 23 23 n n
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