Question

A man with blood group $A$ marries a woman having blood group $B$. The maximum possible blood groups among their progenies are

• A. A, B
• B. A, B, AB, O
• C. AB only
• D. A, B, AB

Answer 1

Answer: (B)

A woman with blood group $A$ can have either of the genotypes $-I^A{I}^O$ or $I^A{I}^A.A$ man with a blood group $B$ can have either of the genotypes -$I^B{I}^O$ or $I^B{I}^B$. Since the given question doesn't mention the specific genotype, thus any of the above-mentioned genotypes can be crossed. As a result of which there is a maximum possibility of obtaining all the blood groups ($A,B,AB,O$ ) among their progeny.