Blood Type A is dominant to Blood Type O. That means that a person with genotype AA and a person with genotype AO will both have Type A Blood, while a person with genotype OO will have Type O Blood. If both parents have blood type AO, they will both have Type A Blood, but their child will have a 25% chance of having Type O blood. The blood type ratio of their children will be 25% AA (Type A Blood), 50% AO (Type A Blood), and 25% OO (Type O Blood).
Yes. If you are ever with a partner that has positive blood there are precautions that need to be taken to have a healthy baby.
Because the parents might be -AO or -BO. The -O gene is hidden because it's recessive, but it can still be passed on to kids.
They could, but they don't need to. Both of your parents must have at least one O allele, meaning neither can have type AB blood. They must be either BO, AO or OO to produce a child with type O blood.
There is no single answer to this question. First, how does the child get type AB? The child needs to get an A gene from one parent and a B gene from the other, simple as that. This means neither parent can be type O because they would not be able to pass on the A or B gene (that is what O means, the absense of the A or B gene). If one parent is type A, the other must be B or AB. If one parent is B, the other must be A or AB. Also, both parents can be AB. In all cases, one passes on the A gene and the other passes on the B gene, that's it.Second, for the Rh factor (the positive and negative), the negative trait is recessive. This means the child must receive a negative gene from BOTH parents to display the negative phenotype. So the parents can be ANY Rh type. Why? Because it is a PAIR of genes, the GENOTYPE, that determines the trait. In the parents, they can be genotype +/- or -/+, meaning they have both the positive and negative gene and they can pass on the negative gene, but they will be POSITIVE Rh because that is the dominant trait. Of course, either parent could also be negative, -/- genotype, and they would certainly pass on the negative gene. So, you see, you cannot definitively type the parents in this case.
With genetic mutations during replication, anything is possible. But, in general two O negative parents could only have a child that is O negative. Conversely, two O positive parents could have a child that is either O negative or O positive.
no, blood type AB has gennotype IA,IB while blood type o has the genotype II. Each of his parents passed on an allele,So neither could have blood type AB
yes
It is possible as the Rhesus factor is a dominant trait. So, even if the parents have only one allele for the factor, there is a 1/4th chance that the child could get neither allele from the parents and end up as O negative.
If they are both O negative, no, the child will be O negative.
If both parents are O- then the child will be O-.
If both parents are O negative than the child will also be O negative. This is a special case with O negative, the same logic doesn't apply to other blood groups.
yes it can be possible too as the parents is already with an o blood group..
They could, but they don't need to. Both of your parents must have at least one O allele, meaning neither can have type AB blood. They must be either BO, AO or OO to produce a child with type O blood.
They cannot. Two parents with type O negative blood will produce offspring of type O negative.
No.
Yes.
No
No, they will have a O negative child.
normally they have "o" plus or negative.