HMB265H1 Lecture Notes - Mendelian Inheritance, Somatic Cell, Continuous Or Discrete Variable

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HMB265H1 Full Course Notes
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HMB265H1 Full Course Notes
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Lecture overview: mendel"s experiments: monohybrid and dihybrid cross, laws of segregation and independent assortment, dominance and recessiveness, test cross, basic probability rules: product rule, sum rule. [genetics before mendel: problems with inheritance] organisms tend to resemble their relatives, Examined traits individually, rather than simply considering whole organism. Rapid generation time (can go across multiple generations in short time) Can examine large numbers of offspring (important when we get quantitative values) For mendel: possess a number of simple", discrete variable traits that can be clearly recorded. Discrete (ex. either green or red) continuous (complex inheritance) They are genetically homogeneous, showing same characteristic over generations. This was revealed by reciprocal crosses (ex: purple(mom)white(dad) and another cross of purple(dad)white(mom) ). This revealed that purple is dominant trait, and the inheritance determination is independent of the parent. When we cross peas, we are considering only one trait/ characteristic. Uppercase for dominant and lowercase of recessive alleles. (punnet square)

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