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Mendel and the History of Genetics

Mendel and the History of Genetics. Gregor Mendel Born 1822 Began his work at age 21 A monk and school teacher interested in plant breeding Studied pea plants Discovered the basic principles of heredity. Mendel’s Studies. Pea plants were an ideal choice for study

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Mendel and the History of Genetics

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  1. Mendel and the History of Genetics Gregor Mendel Born 1822 Began his work at age 21 A monk and school teacher interested in plant breeding Studied pea plants Discovered the basic principles of heredity

  2. Mendel’s Studies • Pea plants were an ideal choice for study • Displayed seven traits in one of two contrasting forms: • seed shape • seed color • seed coat color • pod shape • pod color • flower position • stem length

  3. Mendel’s Pea Plant

  4. Removed stamens from purple flower 1 Transferred sperm- bearing pollen from stamens of white flower to egg- bearing carpel of purple flower 2 Parental generation (P) Stamens (male) Carpel (female) Pollinated carpel matured into pod 3 Planted seeds from pod 4 Examined offspring: all purple flowers 5 First generation offspring (F1) Mendel’s monohybrid crosses Mendel’s Procedure Crossed male pea parts (stamens) and female pea parts (carpels) with opposite traits Carpel matures to first-generation offspring (F1)= PURPLE FLOWERS

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