BIOLOGY 2C03 Chapter Notes - Chapter 2: Statistical Hypothesis Testing, Zygosity, Gamete
21 Jul 2018
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2. 1 gregor mendel discovered the basic principle of genetic transmission. Mendel"s modern experimental approach: mendel was testing the blending theory that traits of the progeny would be a mixture of the characteristics possessed from both parents. Five features of the breeding experiments were critical to his success. 2) use of pure breeding strains to begin the experimental controlled crosses. 5) use of replicate, reciprocal and test crosses: controlled crosses between plants. Capable of cross pollination: pollen in one plant is used to fertilize ovules in another. Mendel carried out artificial cross-fertilization , essentially stopped the plants from self- fertilizing and allow for cross fertilization. This procedure is called controlled genetic cross: pure breeding strains to begin the crosses. Pure breeding strains: are plants that constantly produce the same phenotype. He used 2 different pure breeding strains to cross (ie pure breeding white flower with pure breeding purple) these were the parental generation.
