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Question: you have two purebred dog strains of labrador retriever yellow...

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You have two pure-bred dog strains of Labrador retriever: Yellow (BBee) and Brown (bbEE). You friend wants to have a pure-bred puppy with black coat color. Let’s assume this set of coat color variations follows recessive epistasis with the allele ‘ee’ masking B or b.

A) provide breeding schemes

B) after breeding experiments, provide a scheme of identifying the pure-bred one with black color. Also, what is the frequency of the pure-bred one among the black puppies.

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