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Figure 10.2 Asexual Reproduction 0.5 mm Parent Bud (a) Hydra © 2014 Pearson Education, Inc. (b) Redwoods Figure 10.1 Sexual Reproduction © 2014 Pearson Education, Inc. Figure 10.3b Pair of homologous duplicated chromosomes 5 m Centromere Sister chromatids Metaphase chromosome © 2014 Pearson Education, Inc. Figure 10.4 Key 2n 6 Sister chromatids of one duplicated chromosome Two nonsister chromatids in a homologous pair © 2014 Pearson Education, Inc. Centromere Pair of homologous chromosomes (one from each set) Normal Female © 2014 Pearson Education, Inc. SEX CHROMOSOMES Normal Male © 2014 Pearson Education, Inc. © 2014 Pearson Education, Inc. Figure 10.5 Haploid gametes (n 23) Key Haploid (n) Diploid (2n) Egg (n) Sperm (n) MEIOSIS Ovary FERTILIZATION Testis Diploid zygote (2n 46) Mitosis and development Multicellular diploid adults (2n 46) © 2014 Pearson Education, Inc. Figure 10.7 © 2014 Pearson Education, Inc. Figure 10.8a MEIOSIS I: Separates homologous chromosomes Prophase I Sister chromatids Metaphase I Anaphase I Telophase I and Cytokinesis Sister chromatids remain attached Homologous chromosomes separate Homologous chromosomes © 2014 Pearson Education, Inc. Crossing Over Cell divides Figure 10.8b MEIOSIS II: Separates sister chromatids Prophase II Metaphase II Anaphase II Telophase II and Cytokinesis Sister chromatids separate Haploid daughter cells forming © 2014 Pearson Education, Inc. Figure 10.9a Comparing Mitosis and Meiosis MITOSIS MEIOSIS Parent cell Chiasma MEIOSIS I Prophase I Chromosome duplication 2n = 6 Chromosome duplication Homologous chromosome pair Metaphase I Metaphase Anaphase Telophase 2n Daughter cells of mitosis © 2014 Pearson Education, Inc. 2n MEIOSIS II n n n n Daughter cells of meiosis II 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 © 2014 Pearson Education, Inc. Combination 3 Combination 4 Crossing Over © 2014 Pearson Education, Inc. Figure 10.11-5 Prophase I of meiosis Pair of homologs Chiasma Nonsister chromatids held together during synapsis Synapsis and crossing over Centromere TEM Breakdown of proteins holding sister chromatid arms together Daughter cells Recombinant chromosomes © 2014 Pearson Education, Inc.
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