Diagram a cell with four chromosomes going through meiosis.

Diagram a cell with four chromosomes going through meiosis.

Mitosis vs. Meiosis MitosisOne division2 diploid daughter cellsIdentical to parent cellMitosisTwo divisions4 haploid daughter cellsGenetically different from parent cellhttp://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter28/animation__how_meiosis_works.htmlNucleus

chromosomes

Get one small, one medium and one large of each color chromosome.

What do the colors represent? The Beads? Pair up chromatids with same size and colorPair up chromatids with same size and colorWhat does this represent?What stage?Haploid or diploid?Match homologous chromosomesMatch homologous chromosomesWhat are homologous chromosomes.Carry the same traits Each homologous pair has one from each parentDemonstrate crossing over during prophase. Demonstrate crossing over during prophase. Demonstrate metaphaseDemonstrate metaphaseDemonstrate the first division Anaphase I and Telophase I

Demonstrate the first division Anaphase I and Telophase I

Move your cells through the second division. Move your cells through the second division.

How many daughter cells do you have?Are the daughter cells haploid or diploid?Are the cells genetically Identical or different from the parent cell?

4Haploid Daughter CellsDaughter Cells Parent Cell20Possible Combinations of chromosomeshttp://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter28/animation__random_orientation_of_chromosomes_during_meiosis.html2nWhat does n represent?What was our haploid number of chromosomes?What is the possible number of combinations? 8In people possible 8388608 combinations. Sexual ReproductionCombines 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. Gamete-reproductive cell that contains the haploid set of chromosomes..sperm and eggZygote- Cell formed from fusion of gametes that contains the diploid set of chromosomes.

Sexual Reproduction Methods External Fertilization: the eggs are fertilized outside of the bodyInternal Fertilization: the eggs are fertilized within the female reproductive tractConjugation: cells exchange genetic materialProkaryotesAsexual ReproductionOffspring arise from a single parent. Offspring genetically identical to parent. More likely to inherit mutations. Leads to less diversity. MitosisAsexual ReproductionMethodsBudding offspring grows out of the body of the parent.Spores a reproductive cell capable of developing into a new individualwithout fusion with another reproductive cell. Fissionseparation of the body into two new bodies

QuizCompare and contrast sexual and asexual reproduction.