Three independently assorting genes in mice affect a particular trait, and one d

Question

Three independently assorting genes in mice affect a particular trait, and one dominant allele of each gene is necessary to get a wild-type phenotype.

You select a single wild-type male and cross him with three different tester strains. In the cross with one strain (AAbbcc), only 1/4 of the progeny are wild-type. In the crosses with the other two tester strains (aaBBcc and aabbCC), half of the progeny are wild-type. What is the genotype of the wild-type male?

Enter your answer in the format used in the problem: Uppercase letter for dominant alleles, lowercase letter for recessive alleles. Write the genotype in alphabetical order, with no spaces between any letters. For example:  RRSSTt.

(Your answer must be in the correct format for it to be graded accurately.)

Please explain answer, thank you

Explanation / Answer

AaBBCC will be the possible genotype of wild male.

AaBBCC X AAbbcc

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