How can it be determined if an apparently normal dog iscarrying a gene for deafness?
Phenylketonuria (PKU) is a defect of amino acidmetabolism inherited as an autosomal recessive trait. Untreatedchildren are usually severely mentally retarded. If twophenotypically normal parents have a PKU child, what are thegenotypes and phenotypes of their children and in whatportions?
Cystic fibrosis, inherited as an autosomal recessivetrait, involves a defect of glycoprotein metabolism. Phenotypicallynormal parents had two children, one normal, one with cysticfibrosis. Write the probable genotypes for the parents
In man, hemophilia (failure of the blood to clotnormally) is inherited as an X-Linked recessive trait. A woman hasone hemophiliac son. Write the genotypes for the women, her son,her normal husband, and other children the women mighthave.
