lecture_9__05 - Mitosis 2n replication cell division 2n Mom...

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replication Mitosis: cell division Mom Dad Meiosis: replication cell division Mom Dad cell division + + Meiosis I Meiosis II homologous chromosomes separate sister chromatids separate sister chromatids separate 2n 2n 2n 1n
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Mitosis: nuclear reproduction and division that does not alter ploidy 1n 1n 2n 2n (n = # of copies of each chromosome) G1 total amount of DNA per cell S G2 M G1 Meiosis: nuclear reproduction and division that reduces ploidy by 1/2 2n 1n G1 total amount of DNA per cell S G2 M1 M2
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Fig. 13.8
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Meiosis I: Fig. 13.7
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Meiosis II: Fig. 13.7
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In the following two problems, there are two types of chromosomes, large and small. A crossed X indicates sister chromatids. Which stage of meiosis does this picture represent? a. metaphase I b. anaphase I c. metaphase II d. anaphase II Which stage of meiosis does this picture represent? a. metaphase I b. anaphase I c. metaphase II d. anaphase II
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mitosis meiosis meiosis fertilization 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 2n 1n 2n 2n 2n 1n 1n 2n 2n 2n 2n 2n 2n 2n 1n
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lecture_9__05 - Mitosis 2n replication cell division 2n Mom...

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