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3. In Labrador retrievers, one form of deafness is caused by a recessive allele (d). A breeder has a normal hearing male that he would like to breed. a: What type of cross could the breeder use to find out if this male carries the deafness allele? b. Give the genotype and phenotype of the female that will be used in this cross! c. The male and female have 8 puppies and all have normal hearing. What is the likely genotype of the male?