Diagram a cell with four chromosomes going through meiosis. Mitosis vs. Meiosis Mitosis вЂў One division вЂў 2 diploid daughter cells вЂў Identical to parent cell http://highered.mcgrawhill.com/sites/0072495855/stu dent_view0/chapter28/animati on__how_meiosis_works.html Mitosis вЂў Two divisions вЂў 4 haploid daughter cells вЂў Genetically different from parent cell Nucleus chromosomes вЂў Get one small, one medium and one large of each color chromosome. вЂў What do the colors represent? вЂў The Beads? вЂў Pair up chromatids with same size and color вЂў вЂў вЂў вЂў Pair up chromatids with same size and color What does this represent? What stage? Haploid or diploid? вЂў Match homologous chromosomes вЂў Match homologous chromosomes вЂў What are homologous chromosomes. Carry the same traits Each homologous pair has one from each parent Demonstrate crossing over during prophase. Demonstrate crossing over during prophase. вЂў Demonstrate metaphase Demonstrate metaphase вЂў Demonstrate the first division вЂў Anaphase I and Telophase I вЂў Demonstrate the first division вЂў Anaphase I and Telophase I вЂў Move your cells through the second division. вЂў Move your cells through the second division. вЂў How many daughter cells do you have? вЂў Are the daughter cells haploid or diploid? вЂў Are the cells genetically Identical or different from the parent cell? 4 Haploid Daughter Cells Parent Cell Daughter Cells Possible Combinations of chromosomes n 2 What does n represent? What was our haploid number of chromosomes? What is the possible number of combinations? 8 In people possible 8388608 combinations. вЂў http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter28/animation__random_orientation_ of_chromosomes_during_meiosis.html Sexual Reproduction вЂў вЂў вЂў вЂў Combines the genetic material of two organisms. Introduces new gene combinations in a population. Leads to genetic Variability in the population. Gametes produced in meiosis fuse to form a zygote. вЂ“ Gamete-reproductive cell that contains the haploid set of chromosomesвЂ¦..sperm and egg вЂ“ Zygote- Cell formed from fusion of gametes that contains the diploid set of chromosomes. Sexual Reproduction Methods вЂў External Fertilization: the eggs are fertilized outside of the body вЂў Internal Fertilization: the eggs are fertilized within the female reproductive tract вЂў Conjugation: cells exchange genetic material вЂ“ Prokaryotes Asexual Reproduction вЂў вЂў вЂў вЂў вЂў Offspring arise from a single parent. Offspring genetically identical to parent. More likely to inherit mutations. Leads to less diversity. Mitosis Asexual Reproduction Methods вЂў Budding вЂ“ offspring grows out of the body of the parent. вЂў Spores вЂ“ a reproductive cell capable of developing into a new individual without fusion with another reproductive cell. вЂў Fission вЂ“ separation of the body into two new bodies Quiz вЂў Compare and contrast sexual and asexual reproduction.