TLS Online TPP Program

#Question id: 10966


A couple requests blood typing of their 2-year-old child (father AB, Rh-negative; mother B, Rhnegative). Results of hemagglutination assays of the child’s blood are shown in the next figure. Which of the following conclusions concerning the child’s parentage is valid?


#I Life Science/ Life Sciences Group – I-V
  1. The child could be the natural offspring of this couple
  2. The mother could be the natural mother, but the father could not be the natural father
  3. The father could be the natural father, but the mother could not be the natural mother
  4. Neither the father nor the mother could be the natural parents