1. Ch 13 Meiosis Sexual Reproduction

2. Asexual Reproduction Single Parent Mitotic Division Clone
Hydra Budding

3. Life Cycle Somatic Cells: Haploid, diploid, chromosomes
Karyotype, homologous chromosomes
Sex Chromosomes vs. Autosomes
Fertilization, syngamy, zygote

4. Human Life Cycle

5. Marvelous Meiosis! ~2x IPPMAT Meiosis I: interphase I prophase I
Prometaphase I
metaphase I
anaphase I
telophase I

6. Marvelous Meiosis! Meiosis II (no interphase) prophase II metaphase II
anaphase II
telophase II

7. Comparison of Mitosis and Meiosis

8. Internet Help
Meiosis Animation/quiz
Meiosis Animation

9. Independent Assortment
Number of Possible Combinations
Of Chromosomes is 2n where n=haploid number
If 46 chromosomes then 223
Or about 8 million combinations

10. Crossing Over Recombination of chromosomes
Occurs in Meiosis I (prophase I)
Chiasmata/synaptonemal complex

11. Reasons for such Variability
Independent Assortment
Crossing Over
Random fertilization
Independent Assortment give 8 million possibilities
W/ Crossing over and Random Fertilization Humans have possibility of over 64 trillion combinations between two parents.