ZOL 341 1st Edition Lecture 9 Outline of Last Lecture I Polycistronic mRNA II Genetic code III Reading frame IV Post translation V Mendel genetics Outline of Current Lecture II Dihybrid crosses III Probability theory IV Probability rules Current Lecture dihybrid cross involves the 2 alleles of 2 independent genes principle of independent assortment the segregation of the alleles of a gene is independent of the assortment of the alleles of a different gene produces a 9 3 3 1 phenotypic ratio in F1 generation AB Ab aB ab AB AABB AABb AaBB AaBb Ab AABb AAbb AaBb Aabb aB AaBB AaBb aaBB aaBb ab AaBb Aabb aaBb aabb backcross a cross between the F1 genotype and either of the parental genotypes probability number of times an event occurs total number of events These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute random sampling error the deviation between the observed and expected outcomes due to chance sum rule the probability that one of two or more mutually exclusive events will occur is the sum of their respective probabilities product rule the probability that two or more independent events will occur is equal to the product of their respective probabilities
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