Question

A pregnant women has an equal chance of her baby being blood group A or blood group AB. Which one of the following shows the possible genotypes of the women and the father of her child?

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

Answer 1

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

A) The cross between AA and BO gives a result of AB and A both 50%.

B) The cross between AB and BO gives a result of AB , BB , BO and AO .

C) The cross between AO and BO gives AB , AO , BO and O .

D) the cross between AB and AO gives AA, AO , AB and BO .

So, the correct answer is $I^A$ $I^A$ and $I^B$ $I^O$