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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.

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If neither parents are O negative then how can a sibling be O negative?

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).


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.


Can 0 positive parents born an A positive child?

No, two parents who are both blood type O positive cannot have a child who is blood type A positive. Blood type inheritance follows specific rules, and in this case, it is not possible for two O positive parents to have a child with blood type A positive.


Can a person that has o positive blood and a person with a positive blood make a child that has a negative blood?

Yes, it is possible for a child to have a negative blood type if both parents are carriers of the Rh negative gene, even if one parent is O positive and the other is A positive. Blood type inheritance is determined by a combination of both parents' blood types and Rh factors.


What blood type can a baby be if the father and mother are both type B positive?

A baby can be any blood type that is possible through the combination of the parents' genetic material. In this case, the baby could be blood type B positive like the parents, or it could be blood type O positive if both parents are carriers of the O blood type gene.

Related Questions

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

yes it can be possible too as the parents is already with an o blood group..


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

yes it can be possible too as the parents is already with an o blood group..


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

yes it can be possible too as the parents is already with an o blood group..


What blood type will child have if both parents are o negative?

If both parents are O negative, their child will also be O negative. This is because O negative is a recessive blood type that requires both parents to contribute an O negative allele for the child to have O negative blood type.


What blood GROUP do parents have to have a child with type o negative blood group?

For two parents to have a child with type O negative blood group, both parents must have at least one O and one negative Rh factor allele. The possible parental blood group combinations could be O negative x O negative, O negative x O positive, A negative x O negative, or B negative x O negative.


Can parents with B negative and AB positive have a child with O negative?

No, parents with B negative and AB positive blood types cannot have a child with O negative blood type. The O blood type is inherited from both parents who must pass on the O allele to the child. Since neither parent in this case carries the O allele, they cannot have a child with O negative blood type.


How can two parents with blood type O negative have a child with blood type AB?

It is not possible for two parents with blood type O negative to have a child with blood type AB. In the ABO blood group system, type O is recessive and AB is a combination of A and B, making it impossible for two parents with type O blood to produce a child with type AB blood.


Can parents who have B negative and O positive blood types have a child with O positive blood?

No, they will have a O negative child.


What are parents blood group with their first baby is of blood group o negative?

If the first baby has blood group O negative, it means that both parents must have passed on an O gene and a negative Rh factor gene to the baby. Therefore, the parents could have blood groups A, B, AB, or O with negative Rh factor.


If both the parents have O Negative blood can a daughter be O Positive?

No


Can a child with o negative blood have the same parents as a child with o positive blood?

yes


Can two negative blood factor parents create a negative blood factor baby?

Yes, two parents with negative blood factors (e.g. O-) can have a child with a negative blood factor (e.g. O-). Blood type inheritance follows specific patterns, so it is possible for two negative blood factor parents to pass on the negative factor to their child.