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question 20

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Please use the following information to answer the question(s) below.
A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a) of gene A; a feathered stem, due to an allele (b) of gene B; and hollow roots due to an allele (c) of gene C. The three genes are linked and recombine.
A geneticist did a testcross with an organism that had been found to be heterozygous for the three recessive traits and was able to identify progeny of the phenotypic distribution (+ = wild type) shown in Figure 12.3. Please use the following information to answer the question(s)  below. A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a)  of gene A; a feathered stem, due to an allele (b)  of gene B; and hollow roots due to an allele (c)  of gene C. The three genes are linked and recombine. A geneticist did a testcross with an organism that had been found to be heterozygous for the three recessive traits and was able to identify progeny of the phenotypic distribution (+ = wild type)  shown in Figure 12.3.   Figure 12.3 -If recombination frequency is equal to distance in map units, what is the approximate distance between genes A and B? A)  1.5 map units B)  3 map units C)  6 map units D)  15 map units E)  30 map units Figure 12.3
-If recombination frequency is equal to distance in map units, what is the approximate distance between genes A and B?


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