Chapter 8: Mitosis - Cell Division and Reproduction

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Normal Genetic Complement of Humans: Females: 44 autosomes (22 pairs) + XX Males: 44 autosomes (22 pairs) + XY Note: In most cases, having additional or missing chromosomes is usually fatal or causes serious defects. Down’s syndrome: Trisomy 21. Individual’s with an extra chromosome 21. Most common chromosomal defect (1 in 700 births in U.S.). Mental retardation, mongoloid facial features, heart defects, etc.
Gametes have a single set of chromosomes Humans have two sets of chromosomes, one inherited from each parent. • Diploid Cells: Cells whose nuclei contain two homologous sets of chromosomes (2n). Somatic cells are diploid (almost all cells in our body). In humans the diploid number (2n) is 46. • Haploid Cells: Cells whose nuclei contain a single set of chromosomes (n). Gametes are haploid (egg and sperm cells). In humans the haploid number (n) is 23. Fertilization: Haploid egg fuses with a haploid sperm to form a diploid zygote (fertilized egg).
Page 1 and 2: Chapter 8: The Cellular Basis of Re
Page 3 and 4: Types of reproduction: 1. Sexual Re
Page 5 and 6: Cells Only Arise from Preexisting C
Page 7 and 8: Bacteria Reproduce Asexually by Bin
Page 9 and 10: Human Body Cells Have 46 Chromosome
Page 11 and 12: Eucaryotic Chromosomes Duplicate Be
Page 13 and 14: Eucaryotic Cell Cycle: Interphase +
Page 15 and 16: Duplication of Chromosomes During S
Page 17 and 18: Mitotic Phase: Mitosis + Cytokinesi
Page 19 and 20: Interphase and Prophase of Mitosis
Page 21 and 22: Metaphase, Anaphase, and Telophase
Page 24 and 25: Mitosis: The Stages of Cell Divisio
Page 26 and 27: Cytokinesis in Animal and Plant Cel
Page 28 and 29: Density Dependent Inhibition of Mit
Page 30 and 31: Cell Division is Controlled at Thre
Page 32 and 33: Metastasis: Cancer Cells Spread Thr
Page 34 and 35: Mitosis Replaces Dead Skin Cells
Page 36 and 37: Homologous Pair of Chromosomes: One
Page 38 and 39: There are two types of chromosomes:
Page 42 and 43: Meiosis Produces Haploid Gametes Fr
Page 44 and 45: Meiosis: Generates haploid gametes
Page 46 and 47: Meiosis I: Separation of Homologous
Page 50 and 51: Stages of Meiosis: Meiosis I 3. Ana
Page 54 and 55: Meiosis II: Separation of Sister Ch
Page 56 and 57: Meiosis II: Separation of Sister Ch
Page 58 and 59: Meiosis in Males and Females Sperma
Page 60 and 61: Crossing Over in Meiosis Increases
Page 62 and 63: Accidents During Meiosis Can Cause
Page 64 and 65: Accidents During Meiosis Can Result
Page 66: Abnormal Numbers of Sex Chromosomes

Chapter 8: Mitosis - Cell Division and Reproduction

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