Which of the following valves is most often faulty in the heart? Which of the following valves is most often faulty in the heart? the tricuspid valve the mitral, or bicuspid, valve the pulmonary semilunar valve the aortic semilunar valve

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?