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Figure 10.2

Figure 10.2. Asexual Reproduction. 0.5 mm. Parent. Bud. (a) Hydra. (b) Redwoods. Figure 10.1. Sexual Reproduction. Figure 10.3b. Pair of homologous duplicated chromosomes. 5  m. Centromere. Sister chromatids. Metaphase chromosome. Figure 10.4. Key. 2 n  6.

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Figure 10.2

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  1. Figure 10.2 Asexual Reproduction 0.5 mm Parent Bud (a) Hydra (b) Redwoods

  2. Figure 10.1 Sexual Reproduction

  3. Figure 10.3b Pair of homologous duplicated chromosomes 5 m Centromere Sister chromatids Metaphase chromosome

  4. Figure 10.4 Key 2n 6 Sister chromatids of one duplicated chromosome Centromere Two nonsister chromatids in a homologous pair Pair of homologous chromosomes (one from each set)

  5. Normal Female SEX CHROMOSOMES

  6. Normal Male

  7. Figure 10.5 Key Haploid gametes (n  23) Haploid (n) Egg (n) Diploid (2n) Sperm (n) MEIOSIS FERTILIZATION Ovary Testis Diploid zygote (2n 46) Mitosis and development Multicellular diploid adults (2n 46)

  8. Figure 10.7

  9. Figure 10.8a MEIOSIS I: Separates homologous chromosomes Telophase I and Cytokinesis Prophase I Metaphase I Anaphase I Sister chromatids Sister chromatids remain attached Cell divides Homologous chromosomes separate Crossing Over Homologous chromosomes

  10. Figure 10.8b MEIOSIS II: Separates sister chromatids Telophase II and Cytokinesis Prophase II Metaphase II Anaphase II Sister chromatids separate Haploid daughter cells forming

  11. Figure 10.9a Comparing Mitosis and Meiosis MITOSIS MEIOSIS MEIOSIS I Parent cell Chiasma Prophase I Chromosome duplication Chromosome duplication Homologous chromosome pair 2n = 6 Metaphase I Metaphase Anaphase Telophase MEIOSIS II 2n 2n n n n n Daughter cells of mitosis Daughter cells of meiosis II

  12. Figure 10.10-3 Independent Assortment Possibility 2 Possibility 1 Two equally probable arrangements of chromosomes at metaphase I Metaphase II Daughter cells Combination 1 Combination 2 Combination 3 Combination 4

  13. Crossing Over

  14. Figure 10.11-5 Prophase I of meiosis Nonsister chromatids held together during synapsis Pair of homologs Synapsis and crossing over Chiasma Centromere TEM Breakdown of proteins holding sister chromatid arms together Daughter cells Recombinant chromosomes

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