1. Fr. Gregor Mendel Father of Genetics 1822 - 1884

2. Pre-Mendelian Ideas on Inheritance Blending Homunculus

4. Why was Mendel Successful? 1.Good Research Organism (pea plant) * Small, easy to grow in large numbers * short life cycle  could test several generations * Could cross or self-pollinate

5. Could cross or self-pollinate (Why was this important????)

6. Why was Mendel Successful? 1.Good Research Organism (pea plant) * Small, easy to grow in large numbers * short life cycle  could test several generations * Could cross or self-pollinate * Were “politically correct” (Explain!)

7. Why was Mendel Successful? 1.Good Research Organism (pea plant) 2.Had good math/statistical background 3.Picked good pairs of traits to study: ex: Tall/short ex: (find for HW!)

8. Mendel’s Experiments Experiment #1 Created “pure breeding” tall plants Created “pure breeding” short plants

9. Experiment #1 (cont) Crossed “pure” tall x “pure” short

10. Experiment #1 (cont) Crossed two F1 plants (Monohybrid Cross!)

11. Now we know….

13. Mendel’s Laws Law/Principle of Dominance Law/Principle of Segregation Principle of Independent Assortment

14. figure 13-04_02