Fr. Gregor Mendel Father of Genetics 1822 - 1884.

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Presentation transcript:

Fr. Gregor Mendel Father of Genetics

Pre-Mendelian Ideas on Inheritance Blending Homunculus

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

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

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!)

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!)

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

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

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

Now we know….

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

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