What is the probability that a child will be a type A if both parents are AB?

Answer 1

If one of the parents has AB blood, it's impossible for the child to have O. Each parent passes down either A or B, if they have them. Because the mother in this scenario has A and B, it can pass one down, and the child would not have O.

Answer 2

There is nearly zero percent probability that a man and woman who have blood type AB will ever have a child with blood type O.

The reason is that in order to be blood type O, you must have received a type O allele from both parents. Individuals with type AB, like the parents in the question, only carry alleles for type A and for type B - not type O.

The only way that they can have a child with Type O will be if a mutation occurs in both of them so that their type A allele can not produce the A protein or the type B allele can not produce the B protein. This will result in a type O allele. This must happen in both parents, at the same time, and the mutantions from both parents will need to fertilize each other. This would be an exceedingly rare event.

I suppose that they parents can adopt their first child. This would result in a much greater likelihood of have a Type O child. The probability would then depend on the child's ethnic background and the probability of Type O individuals with that ethnic background occurring.

Answer 3

We are looking for the possible blood types of a baby.

Parental information:

• Mother type A -- can be AA or AO = contributes A or O gene
• Father type B -- can be BB or BO = contributes B or O gene

Baby receives one gene from each parent:

• Baby is type AB = Type AB
• Baby is type AO = Type A
• Baby is type BO = Type B
• Baby is type OO = Type O

Therefore, if the parents are Type A and Type B, there is a 25% chance that the baby will be Type O. and another 25% chance that he will be Type A.

Answer 4

If both parents are type AB, then they can only pass on an A or B allele to their child. Therefore, the probability of their child being type A is 50%.

Answer 5

In case when both Parents have blood type of AB the gametes form will be of A, and B now the progeny will be of either AA or BB or AB but in no case it can be O so the probability is 0%

Answer 6

The chances of producing a child with AA. They will produce 1AA, 2AB and 1BB. or 1 out of 4.

Answer 7

1/2 DO the Punnett Square.

Answer 8

nearly impossible

Answer 9

25%

Answer 10

5%