You are a researcher who is interested in three genes in drosophila: The a gene, the...

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Biology

You are a researcher who is interested in three genes indrosophila: The a gene, the b gene and the c gene. You think thegenes may be linked, so you decide to do a cross using atrue-breeding a+/b+/c+ fly and an a/b/c fly. The F1 generation isall a+/b+/c+. However, when the F1 generation is bred to atrue-breeding a/b/c fly, it yields the following offspringphenotypes: 596 a+/b+/c+ ; 589 a/b/c ; 183 a+/b/c ; 176 a/b+/c+ ; 0a/b+/c ; 0 a+/b/c+ ; 0 a+/b+/c ; 0 a/b/c+. Which What is a possibleinterpretation of your results?
Group of answer choices
The b and c genes demonstrate 100% (complete) linkage.
The b and c genes are recessive lethal alleles.
The a gene is a dominant lethal allele.
The a and b genes demonstrate 100% (complete) linkage.

Answer & Explanation Solved by verified expert

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The correct answer is option aTest cross is the cross made with homozygous recessive parentand is a common method to test the linkage between genesCross was made between truebreeding abcfly and an abc fly The F1 generation is allabcThe test cross was then performed between F1 and homozygousrecessive parentabc xabcF2abc 596 See Answer

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