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

Parental information:

  • Mother type A -- can be AA or AO = contributes the A or O gene
  • Father type O -- can only be OO = contributes the O gene
Baby receives one gene from each parent:
  • Baby is type AO
  • Baby is type OO
Generally speaking, since there is no B gene in the parents' genotype, the baby cannot be Type B.

HOWEVER: There is more to ABO blood typing that just the ABO gene.

There is also an inhibitory gene that will change any genotype into the phenotype O.

Therefore a person with genetically AB blood can be tested as having Type O.

If the Type O parent has the inhibitory gene affecting his Type B or AB blood, then the Type B baby is definitely possible.

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12y ago

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How can one determine blood type from parents?

Blood type can be determined from parents by looking at their blood types and using the principles of genetics. A child's blood type is determined by the combination of blood type genes inherited from their parents. For example, if both parents have type A blood, their child could have either type A or type O blood. If one parent has type A blood and the other has type B blood, their child could have type A, type B, type AB, or type O blood.


What blood type do children get mothers or fathers?

You don't get just one or the other. For example: If your blood type is AB, either of your parents could have A, B, or AB. Another example: I have O and my husband has O. All of our children will have O, because O doesn't combine with A or B.


If both parents are blood type o is it possible for their child to have a blood type a positive?

No, two type O parents can only have type O children. See the table below from www.dna-bioscience.co.uk/did_you_know_abo.shtml If you look at the row for mother's blood type O where it intersects with the column for father's blood type O, you will see that the child's blood type must be O. For the child to be Rh+, only one of the parents has to be Rh+.


Are all children of same parents the same blood type?

of course they can, it doesnt mean that if you dont have the same blood type as your siblings, your adopted or something. if your parent's blood types differ from each other there is a huge tendency that the sibling's blood types are different from each other. for exaple your father is a heterozygous A while your mother is a heterozygous B.. their children's blood types can be AB, and an O can also be one of the possiblities.. if its too complicated to understand then you can just learn it from your genetic lessons in biology..


What blood type our children will have if both parents o neg?

Generally speaking, from what I've learned it Biology, is that more than likely, your children will have the same blood type, because O is a dominant trait. Now in order to get a better understanding of what blood type they would have, you need to know the blood types of your parents, and a little chart can be drawn, and it would basically tell you what blood type your children would have. But I'm pretty sure they will be type O.

Related Questions

Could two parents that have blood type A have children with blood type O?

No, unless they adopt.


Could two parents that have blood type 0 have children with either blood type A or blood type B?

No way...


How can a child's blood type be b positive if mom is b positive and dad is a positive?

You could have several children with different blood types. you get your blood type from either parents or even grand parents.


Can a child with b negative blood have parents with o positive?

Only if he's adopted. Parents with a + blood type can have children with a - blood type, but parents with an O bloodtypes can only have O type children together.


Can parents with o blood type to have a child with b blood type?

If both parents are type O blood they will only have type O children


If the parents are both Type BO what blood types could their children have?

We are looking for the possible blood types of a baby.Parental information:Mother type BO -- contributes B or O geneFather type BO -- contributes B or O geneBaby receives one gene from each parent: Baby is type BOBaby is type OOWith two heterozygous Type B parents, the children can be Type B or Type O.


Do your children have to have same blood as you?

No - children do not have to have the same blood type as the parents. For example, if one parent has blood type A and the other has blood type AB, the child might have A, B or AB blood types. (For the child to have B, the parent with blood type A would need to be heterozygous, Ao)


If both parents are both type a positive blood what blood type will their children be?

blood group "A" or "O".


What are the possible blood types among the children of parents that are IAIB and ii?

The children of parents with blood types IAIB and ii could have blood types IAi or IAIB.


Will parents with a positive blood type have children with a positive blood type?

There is 50% that children will be of negative blood type if parents are heterozygous positive. 25% if one parent is homozygous and other heterozygous. 0% if both homozygous.


How can one determine blood type from parents?

Blood type can be determined from parents by looking at their blood types and using the principles of genetics. A child's blood type is determined by the combination of blood type genes inherited from their parents. For example, if both parents have type A blood, their child could have either type A or type O blood. If one parent has type A blood and the other has type B blood, their child could have type A, type B, type AB, or type O blood.


Should children have same blood type as parents?

No. Often a child can have a completely different blood type from their parents or even the same. It really depends on their genetics.Some combinations of parents are unable to get children with certain blood types - assuming no mutations occur.Regarding the AB0-system:If both parents have blood type 0, all their children will have blood type 0.If both parents have blood type A, no children will have blood type B or AB.If both parents have blood type B, no children will have blood type A or AB.If both parents have blood type AB, no children will have blood type 0.Of course you can be more specific if you know the parents' genes.