29. Use a Punnett square(s) to determine the statistical probability that the offspring of an Rh- positive father and Rh-positive mother will be Rh-negative. Use percentages to explain your results. 30. When would an Rh-positive woman need to be given a RhoGAM shot? Why? ABO and Rh Blood Typing Questions 31. Which blood type is determined by inheriting gene(s) that code for enzymes? 32. Which blood type does not involve antibodies (agglutinins) circulating in plasma unless the person's immune system is stimulated by exposure to incompatible RBCs? 33. Which specific blood group is considered to be the universal donor and which is considered to be the universal recipient? Why are these classifications considered to be too simplistic? you 34. List and explain three things you learned about ABO and/or Rh blood typing that did not know before completing this exercise.