Questions about genetics and blood? Please see below. Thanks!?

Question

1. A child who inherits IA from his mother and IB from his father will have type _____ blood.
2. A child whose parents both have type O blood will have type___ blood.
3. If a women with blood type A has a baby with blood type AB, a man with blood type O _____ be the father.
4. IA and IB are dominant to____.

So the answers would be
1. AB Blood
2. O blood
3. cannot
4. ii

So the answers would be
1. AB Blood
2. O blood
3. cannot
4. ii

Is that right? Please verify. Thanks!

Answer 1

1. The IA and the IB are just the alleles that he gets from the parents. Do you know what blood type IA IB makes? That's the answer to this question.
2. Everyone with Type O blood has the alleles ii. So the parents are ii and ii. You can tell what the child gets from this.
3. Ask yourself if a man with blood type O (alleles are ii) can have a child with blood type AB (alleles are IA IB). What did this child get from Dad? An IA or an IB. That's the only possibility if this man is the father. So in the blank decide if he "may" or "can not" be the father.
4. A person with Type A blood may have IA IA or IA i. Which is the allele that doesn't show up when other alleles are there? The one that only gets to say anything when it is the only one present is the recessive.

That should be all the information you need for you to figure out the answers to these questions.