chapter9 outline

chapter9 outline - 9 _ MEIOSIS AND SEXUAL REPRODUCTION...

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9                                                                                                                                                                ______________________________________________________________________________ MEIOSIS AND SEXUAL  REPRODUCTION Chapter Outline IMPACTS, ISSUES: WHY SEX? AN EVOLUTIONARY VIEW OVERVIEW OF MEIOSIS Think “Homologues” Two Divisions, Not One VISUAL TOUR OF MEIOSIS HOW MEIOSIS PUTS VARIATION IN  TRAITS Crossing Over in Prophase I Metaphase I Alignments FROM GAMETES TO OFFSPRING Gamete Formation in Plants Gamete Formation in Animals More Shufflings  at Fertilization SUMMARY SELF-QUIZ CRITICAL THINKING Objectives 1. Contrast  asexual  and  sexual types  of reproduction  that  occur on the cellular  and  multicellular   organism  levels. 2. Understand  the effect that meiosis has on chromosome  number. 3. Describe the events that occur in each meiotic phase. 4. Compare  mitosis and  meiosis; cite similarities and  differences. Key Terms asexual reproduction genes clones sexual reproduction gametes allele meiosis chromosome  number 64 Chapter  Nine
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diploid  number homologous   chromosomes germ cells haploid  number centromere sister chromatids spindle apparatus meiosis I meiosis II prophase  I crossing over nonsister chromatids genetic recombination metaphase  I maternal chromosomes paternal chromosomes spores sporophytes gametophyte primary  spermatocyte sperm oocyte polar body ovum egg fertilization 65 Chapter  Nine
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Lecture Outline Impacts, Issues: Why Sex? A. Asexual reproduction  is quick and  efficient.
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This note was uploaded on 06/29/2008 for the course BIOL 1408 taught by Professor Mason during the Spring '08 term at Dallas Colleges.

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chapter9 outline - 9 _ MEIOSIS AND SEXUAL REPRODUCTION...

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