Use the Following Information to Answer the Question

question 28

Multiple Choice

Use the following information to answer the question.
A plantlike organism on the hypothetical planet Pandora has three genetic traits: leaf color, controlled by gene L; a stem texture, controlled by gene S; and root length controlled by gene R. The three genes are linked and recombine.
A geneticist performed a testcross with a strain of the organism that is heterozygous for the three traits. She recorded progeny with the following phenotypic distribution:

Which of the progeny phenotypes will require recombination between genes L and S?

• A) 1, 2, 5, and 6
• B) 1, 3, 6, and 7
• C) 2, 4, 5, and 8
• D) 2, 3, 5, and 7

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