BIO 2133 Chapter 3.1-3.5: Mendelian Genetics
14 Feb 2017
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Gregor mendel published results from experiments that would lay down the foundation for the formal discipline of genetics. Used the garden pea to study inheritance. 3. 1 mendel used a model experimental approach to study patterns of inheritance. Performed his first set of experiments in 1856. Organisms (peas) was easy to grow and hybridize artificially. Restricted his examination to one or few pairs of contrasting traits in each experiment. 3. 2 the monohybrid cross reveals how one trait is transmitted from generation to. Monohybrid cross = mating true-breeding individuals from two parent strains. We first examine the first generation, then the self-fertilized individuals from the first generation. Parents (p 1 ), their offspring (f 1 ), individuals results from selfed f 1 (f 2 ) Genetic data expressed and analyzed as ratios. In mendel"s crosses, the ratio of expected:contrasting traits was 3:1 in the f 2 generation. Mendel"s first three postulates: unit factors in pairs.
