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Additive Rule - Additive Rule The probability of two or...

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Additive Rule The probability of two or more mutually exclusive events occurring is equal to the sum of their probabilities. What is the probability that a student will get an “A” or a “B” in a class if students generally earn the following grades: A = 10% (or 0.10) B = 35% (or 0.35) C = 45% D = 10% Solution: In this example, the two outcomes (getting an "A" or getting a "B") are mutually exclusive because you can only get one or the other. The additive rule is used to determine the overall probability of getting an "A" or a "B". 10% + 35% = 45% (or 0.10 + 0.35 = 0.45). Consider Two Loci at the Same Time Independent Assortment Genes that are on different chromosomes assort independently. The following are four different metaphase I allignment patterns that are possible for a hypothetical species with a diploid chromosome number of 6. The alignment pattern shown in the diagram below will produce Sy and sY gametes.
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The alignment pattern shown in this diagram will produce SY and sy gametes.
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