Question

A child has the blood group '$O$'. The possible genotypes of his parents are

• A. $I^A{I}^B\times I^A{I}^O$
• B. $I^O{I}^O\times I^A{I}^A$
• C. $I^A{I}^B\times I^O{I}^O$
• D. $I^B{I}^O\times I^A{I}^O$

Answer 1

Answer: (D)

The possible genotype of his parents will be $I^B{I}^O\times I^A{I}^O$.

Chart showing inheritance of blood groups of children of various parents.