© 2014 Pearson Education, Inc. Figure 10.2 (a) Hydra(b) Redwoods Parent 0.5 mm Bud Asexual Reproduction
© 2014 Pearson Education, Inc. Figure 10.1 Sexual Reproduction
© 2014 Pearson Education, Inc. Figure 10.3b Pair of homologous duplicated chromosomes Centromere Sister chromatids Metaphase chromosome 5 m
© 2014 Pearson Education, Inc. Figure 10.4 Key Centromere Pair of homologous chromosomes (one from each set) Sister chromatids of one duplicated chromosome Two nonsister chromatids in a homologous pair 2n 6
© 2014 Pearson Education, Inc. Normal Female SEX CHROMOSOMES
© 2014 Pearson Education, Inc. Normal Male
© 2014 Pearson Education, Inc.
Figure 10.5 Key Haploid (n) Diploid (2n) Egg (n) Haploid gametes (n 23) Sperm (n) OvaryTestis Diploid zygote (2n 46) Mitosis and development Multicellular diploid adults (2n 46) MEIOSIS FERTILIZATION
© 2014 Pearson Education, Inc. Figure 10.7
© 2014 Pearson Education, Inc. Figure 10.8a MEIOSIS I: Separates homologous chromosomes Prophase IMetaphase IAnaphase I Telophase I and Cytokinesis Sister chromatids Sister chromatids remain attached Cell divides Homologous chromosomes separate Crossing Over Homologous chromosomes
© 2014 Pearson Education, Inc. Figure 10.8b MEIOSIS II: Separates sister chromatids Prophase IIMetaphase IIAnaphase II Telophase II and Cytokinesis Sister chromatids separate Haploid daughter cells forming
© 2014 Pearson Education, Inc. Figure 10.9a MITOSISMEIOSIS Metaphase 2n2n2n2n Daughter cells of mitosis Parent cell 2n = 6 Chromosome duplication Chiasma MEIOSIS I Prophase I Metaphase I MEIOSIS II Daughter cells of meiosis II nn nn Anaphase Telophase Homologous chromosome pair Chromosome duplication Comparing Mitosis and Meiosis
© 2014 Pearson Education, Inc. Figure Possibility 1 Possibility 2 Two equally probable arrangements of chromosomes at metaphase I Metaphase II Daughter cells Combination 1Combination 2Combination 3Combination 4 Independent Assortment
© 2014 Pearson Education, Inc. Crossing Over
© 2014 Pearson Education, Inc. Figure Prophase I of meiosis Pair of homologs Chiasma Centromere TEM Synapsis and crossing over Breakdown of proteins holding sister chromatid arms together Daughter cells Recombinant chromosomes Nonsister chromatids held together during synapsis