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Can two negative blood type parents have an rh positive blood type child?
Wiki User
∙ 13y ago
No. The negative blood trait is a recessive trait. Two negative parents only carry the recessive gene and cannot pass on the dominant positive gene. At least one parents must be positive in order to have a positive child. This is not like math where two negatives multiplied together equals a positive. IN this case, two positives can have negative or positive children depending on the parents phenotypes. two negative parents can only have a negative child.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoa more simple explanation is that the RH factor refers to a protein in your blood. if you have it, you are positive, if not, you are negative. if both parents are negative, no one can pass the protein on to the baby.
no, because RH negative is a recessive gene (-) (see description below), and RH positive is a dominate gene (+).
Most genes have different variants called alleles which may be dominant or recessive.
A dominant allele will always lead to a particular phenotype when it is present, so only one copy is needed to produce that phenotype. A recessive allele must always be present as two copies in order for the phenotype to be expressed.
Therefore, it works like this...
You always get one gene for every allele from each parent, and therefore depending on the types you get determines RH positive or negative. There is a chart of possibilities below.
From Mom From Dad Results of offspring
RH+ RH+ RH+
RH+ RH- RH+
RH- RH+ RH+
RH- RH- RH-
Therefore two RH- parents cannot produce an RH+ child.
Wiki User
∙ 13y agoNo. Rh - is recessive, so they are both homozygous -, and therefore can only produce Rh - (homozygous) babies.
This is something I always thought was true. However, I am RH-, my husband is RH-, but yet I am given the rhogam shot at 28 weeks with each pregnancy. I wondered if this was necessary and found that it is a good idea to have it done.
Wiki User
∙ 13y agoNo, it can't happen.
if one of the parents or both are +, the child will be Positive.
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Can 0 positive parents born an A positive child?
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.
Can a person that has o positive blood and a person with a positive blood make a child that has a negative blood?
CAN TWO POSITIVE BLOOD TYPES MAKE a negative blood type
Can a positive parents have o negative child?
No, it can't happen. if one of the parents or both are +, the child will be Positive. I don't know if 2 negatives can have a positive. But i do know that if one of the parents is positive and the other is negative, you can have a either a positive or negative child. (I have twins, one is negative and the other is positive.)
Can a blood type b negative man father a blood type a positive child?
yes, if the mother is either A positive or AB positive.
Can a mother with a negative blood and father with o positive blood have b positive blood group baby?
No. For a person to be "O" blood type, they have a phenotype of O, which can only come about if they have a genotype of OO. If both mother and father are O's then they have no B that they can donate to the baby.
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.
Can parents with b positive and a negative blood have a child with o positive blood?
Yes, you very much can have a child with O positive blood.
Can two parents with o positive have a child with a A negative blood type?
it is possible but the child can be a positive
Can a child have a negative blood types if the parents are both a positive?
Yes! Parents have two genes for pos/neg blood type, and only one of them needs to be positive for the parent to have positive blood type. Most positive-blooded people have one positive gene and one negative gene. If both positive parents pass on their negative gene, they can have a child with a negative blood type.
Can a child with o negative blood have the same parents as a child with o positive blood?
yes
Can two parents with A positive blood have a child with O negative blood type?
No.
Can a b positive and a positive have a b negative child?
No. If both parents are positive, the child will be positive. If both parents are negative, the child will be negative. Parents who are negative and positive can have children who are either positive or negative. '+' + '+' = '+' '-' + '-' = '-' '+' + '-' = '-' or '+'
Can parents with b negative blood have a child with o positive blood?
If both parents are B- they can only have children who are B- and O-. One would have to be positive in order to have a child with positive blood.
If both parents have positive blood type will the child have a positive?
Probably, because it only takes one positive gene to have positive type blood. But if the positive parents each have one positive and one negative gene, there is a 25% chance their child will be negative.
Can negative and a positive blood type make a positive?
If one of the parents is A positive, the child could be A positive.
Can a A positive blood type mother give birth to Rh negative daughter?
Can a child with RH neg blood come from parents that are A positive and A negative
Can two parents who have positive blood type have a child with negative blood type?
yes they can
