Question

Child with blood group O has B group father. The father has a genotype of

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

Answer 1

The correct option is B $I^O{I}^B$

The father with B group can have the genotype $I^O{I}^B$ or $I^B{I}^B$ . The child with blood group O will have the genotype ii, one from each parent. Hence the father has the genotype $I^O{I}^B$.