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Unformatted text preview: This value was normalized when compared to the rest of the class's data. 3. In the first crossover, the 2 nd and 4 th genes cross giving a tan, bl, bl, tan genotype. These then replicate to give the tan, tan, bl, bl, bl, bl, tan, tan final phenotype. In the second cross the 1 st and 3 rd genes cross to give a bl, tan, tan, bl genotype and again they replicate to produce the final bl, bl, tan, tan, tan, tan, bl, bl phenotype. 4. 66.7% recombination frequency is highest possible, because assuming that there is an equal distribution between the 6 possible phenotypes, 4 are recombinant and 2 are parental. This gives a 4/6 ratio of recombination. By definition, if there were more of the 4 recombinant phenotypes than the 2 parental, the recombinants would have to be considered the parental genotypes....
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- Winter '10