3. A wealthy elderly couple die together in an accident. Soon, a man shows up to claim their fortune and says he is their only son who ran away from home as a boy. Other relatives dispute his claim. Hospital records show that the deceased couple were type AB and O respectively. The claimant to the fortune was type O. Could he be their biological son? Explain.
Answers & Comments
Answer:
No. The claimant was not correct. If he was the son of the couple, his blood group would've been either A (with genotype AO) or B (with genotype BO) as the deceased have the blood type O and AB.
The son's blood group wouldn't have been O(with genotype OO) as the alleles A and B are co dominant to each other and completely dominant over the allele O.
Explanation: