14Mendel - Mendelian Genetics cn cn cn cn cn cn cn cn cn cn...

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Mendelian Genetics Drosophila notation homozygous locus genotype true-breeding heterozygous P generation F1 generation phenotype dominant recessive Punnett square F2 generation monohybrid cross Gregor Mendel 1 st law, segregation of alleles : alleles of a gene pair separate from each other during gametogenesis 2 nd law, independent assortment of genes : allele segregation at one gene is independent of allele segregation at other genes monohybrid testcross dihybrid cross Problem #1 . P: cn cn pb + pb + x cn + cn + pb pb; determine the expected genotypic ratio for the F 2 product rule : when two events are independent of one another, the probability that they will occur together is the product of their individual probabilities. Most genes are independent of each other. sum rule : when two events are mutually exclusive, the probability that either of the two events will occur is the sum of their individual probabilities. Problem #2 . Determine the phenotypic ratio for the offspring of the cross AaBbccDD x AabbCcDd. Problem #3 . Determine the probability that the first offspring of that cross will be AaBbCcDd Chi Square Analysis χ 2 = (O – E) 2 E Problem #4 . AaBb x AaBb A_bb 11 A_B_ 66 aaB_ 13 aabb 10 n = 100 χ 2 = 19 cn cn cn cn cn cn cn cn cn cn cn + cn + cn + cn + cn + cn + cn + cn + cn + cn + cn + cn cn cn + Σ
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Missing Info 4/17 Problem 1 P cn cn (cinnabar eyes) X cn+cn+ (wildtype eyes) F1 cn+cn – wildtype X cn+cn (cross breed the F1’s to get the F2) this is a monohybrid cross. If you do not receive instructions on how to find the F2 generation, then cross the F1’s to get the F2. F2
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14Mendel - Mendelian Genetics cn cn cn cn cn cn cn cn cn cn...

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