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Unformatted text preview: a. Expected ratio of dominant and recessive phenotypes is 3:1= probably is frequency ¾ chance that any individual offspring of heterozygous individuals will express dominant phenotype ¼ chance that any individual offspring of heterozygous individuals will express recessive phenotype B. Event is certain to occur = probability is 1 Event is certain NOT to occur= probability is 0 A probability can be 0,1, or some number between 0 and 1 C. Punnett Square – following two statistical principles a. Product rule predicts the combined probabilities of independent events. Events are independent if the occurrence of one does not affect the probability the other will occur....
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 Fall '09
 D'ARVILLE
 Genetics, early 20th century, heterozygous individuals, Predict Mendelian Inheritance, a. Chromosome theory

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