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Fr. Gregor Mendel

Fr. Gregor Mendel

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Fr. Gregor Mendel

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  1. Fr. Gregor Mendel Father of Genetics1822 - 1884

  2. Pre-Mendelian Ideas on Inheritance • Blending • Homunculus

  3. Homunculus

  4. Why was Mendel Successful? • 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? • 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? • Good Research Organism (pea plant) • Had good math/statistical background • Picked good pairs of traits to study:ex: Tall/shortex: (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….

  12. Now we know….

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

  14. figure 13-04_02 figure 13-04_02