Use the Following Information to Answer the Questions Below

question 12

Multiple Choice

Use the following information to answer the questions 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 as follows:
A geneticist did a testcross with an organism that had been found to be heterozygous for the three recessive traits and she was able to identify progeny of the following phenotypic distribution (+ = wild type) :

-If recombination is equal to distance in centimorgans (cM) , what is the approximate distance between genes A and B?

• A) 1.5 cM
• B) 3 cM
• C) 6 cM
• D) 15 cM
• E) 30 cM

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