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Remember there is also the Rhesus factor (+ or -) and the probability varies depending on your ethnic origin for instance:

In the United Kingdom, AB+ are 3% and AB- are 1% of the population.
In the United States, AB+ are 3.4% and AB- are 0.6% of the population.
In Hong Cong, AB+ are 7% and AB- are 0.05% of the population.


The world Population-weighted means are, AB+ are 5.06% and AB- are 0.45% of the population.

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14y ago
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10y ago

We are looking for the possible blood types of PARENTS.

Available information:

  • Baby type A - can be AA or AO - would have to receive an A from one parent
Baby receives one gene from each parent:
  • Mama AO and Papa AO = baby AA, AO, OO
  • Mama AO and Papa BO = baby AB, AO, BO, OO
  • Mama AO and Papa OO = baby AO, OO
  • Mama AA and Papa OO = baby AO,
  • Mama AA and Papa AO = baby AA, AO
  • Mama AA and Papa AA = baby AA
  • Mama AB and Papa AA = baby AA, AB
  • Mama AB and Papa AO = baby AA, AO, AB, BO
  • Mama AB and Papa OO = baby AO, BO
  • Mama AB and Papa BO = baby AO, BO, AB
The probability of a Type A baby would depend on the specific parents involved.
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Q: What is the probability of an offspring with type A blood?
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Can o and b have an a?

No, O and B blood type parents can not create an A blood type offspring. The only blood type offspring that can be created by these parents is O+, O-, B+, or B-.


What are the blood types possible in offspring if both parents are type O?

We are looking for the possible blood types of a baby.Parental information:Mother type O --can only be OO = contributes the O geneFather type AB --can only be AB = contributes A and B genesBaby receives one gene from each parent: Baby is type AO = Type ABaby is type BO = Type BGenerally speaking, with these parents there would be a 50% chance of either having a Type A or Type B baby. 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 A, B or AB blood, then other blood types for the baby are possible.


Could a type o individual and a type ab individual ever produce any offspring with type A blood?

Although both individuals have type o, their parents didnt necessarly have o. Some generations behind might (most likely) have had A, so by genetics their offspring got A.


What blood type will the offspring be if the Mother has A- blood and the father has O- blood?

the blood group of baby can be O,A,B or AB.


If someone cross a purebred mother with type B blood and a father with type AB blood what are the possible blood type outcomes of their offspring?

Based on Punnett squares, the possible outcomes are A, B and AB.

Related questions

What blood type can be found in an offspring if mother has type A blood and the father has type b blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


What blood type can be found in an offspring if a mother has a type A blood and the father has type B blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


What blood type can be found in an offspring if a mother has type A blood and the father has B blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


Can two o blood types have an o blood type offspring?

100% of the offspring of type O parents will be type O.


What blood type can be found in an offspring if a mother has type a and the father has type b blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


What blood type (or types) can be found in an offspring if a mother has A blood and the father has type B blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


What blood type (or types) can be found in an offspring of a mother has type O blood and the father as type B blood?

Without any further information about the blood types of the offspring's parents, you can say that the offspring of a parent with type A and parent of type B could have any blood type -- A, B, O, or AB.


Could a female with B type and a man with AB type blood produce an offspring with O type blood?

Yes, an individual with blood type B can produce an offspring with blood type A. The explanation for this is that a mother with the blood type A can have a child with a father who has a blood type of A or AB and produce a child with type A blood.


Can o and b have an a?

No, O and B blood type parents can not create an A blood type offspring. The only blood type offspring that can be created by these parents is O+, O-, B+, or B-.


What are the blood types possible in offspring if both parents are type O?

We are looking for the possible blood types of a baby.Parental information:Mother type O --can only be OO = contributes the O geneFather type AB --can only be AB = contributes A and B genesBaby receives one gene from each parent: Baby is type AO = Type ABaby is type BO = Type BGenerally speaking, with these parents there would be a 50% chance of either having a Type A or Type B baby. 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 A, B or AB blood, then other blood types for the baby are possible.


If a man with blood type A and a women with blood type B produce an offspring what might be the offspring's blood type?

Depending on their actual genotypes and which of those genes the offspring receive, their offspring might have AB, A, B, or O blood type. For the man to have a phenotype blood type A he might have either genotype AA or Ao. For the woman to have a phenotype blood type B she might have either genotype BB or Bo.


A man with blood type o marries a blood type ab what are their childrens probability in blood types?

The children will have type AB