In a three-point testcross the nonrecombinant progeny are A+B+ C+ and a b c. The double crossover progeny are A+ B+ c and a b c+. Which gene is in the middle and why? Please answer with lots of explanation of how you arrived to the answer

Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter11: The Basic Principles Of Heredity
Section: Chapter Questions
Problem 11TYU: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were...
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 In a three-point testcross the nonrecombinant progeny are A+B+ C+ and a b c. The double crossover progeny are A+ B+ c and a b c+. Which gene is in the middle and why? Please answer with lots of explanation of how you arrived to the answer 

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Three point cross refers to usinh three genes to determine order and distance between genes.

During double cross over the middle allele moves from one sister chromatid to another.

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