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Can parents both blood type B positive have a child with O negative blood type?
Yes parents who are both B blood group can have a child with O negative. This is because B blood group only requires one parent gene to be B to have B blood group - they may also have one O gene. People have two blood group genes, one from both parents. B gene is "dominant" as is A gene. O gene is "recessive". AB blood group means a person has one A gene and one B gene B blood group means a person has either one B gene and one O gene or two B genes A blood group means that a person has either one A gene and one O gene or two A genes O blood group means that a person has two O genes Rhesus positive or negative is similar - positive is dominant and therefore a person with one positive gene and one negative will be rhesus positive. A person who is rhesus negative has both negative genes, and received one negative gene from both parents, both who may be rhesus positive ( with one positive and one negative gene each). Importance of O negative blood - O negative blood group is called the "universal donor" because the blood is least likely to cause transfusion reactions so is safest to use in an emergency before blood groups can be identified and matched.
If both parents are A+ can a child be B+?
If both parents are A+ can a child be B+?
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We are looking for the possible blood types of a MOTHER Available information: Father type O neg-- can only be OO Rh (--) Genes: O, (-) Baby type A pos-- can… be AA or AO with Rh (++) or (+-) Baby receives one gene from each parent: Baby is type AO Rh (+-) Mother must be Type A pos -- AA or AO and Rh (++) or (+-) Contributing genes: A, O, (+), (-) YES, since the father is contributing an O and (-), the baby might be Type A+, if the mother gives him the A and (+) genes. 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. Baby is type A+ which can be genetically AA or AO If one or both parents has the inhibitory gene affecting their AA, AO or AB type, then you can have two Type O parents (one Rh neg & other Rh pos) with a Type A offstpring. **Yes. My son is 0- and my daughter in law is 0+ and they just had a A+ baby boy. It is very rare but the doctor said it can happen because every has a primary and secondary (recessive) blood gene. Since my d-i-law's father is A+ and her mother is 0+ and his parents are both 0+ but his mothers mother is A+ and her Father is 0+ there are many recessive A+ genes in their DNA blood type therefore they can have a A+ child. (Example mother is O+/A+ and father is 0-/A+ equals= A+/0 child.) 0 seems to be universal and can throw off a recessive gene. In our case; since it is rare; the baby and the mother's blood types caused him to have alot of jaundice (18) so he had to go back in hospital to be under the light for an additional 24 hours to bring it down. She was nursing and her milk had not come in to give him the fluids to fight off the excess billiruben count. Other than that; it will not be a problem for either of them. Hope this helps, as it is hard to find this information on the Internet. Most sights say no because they are stating the normal without considering the recessive secondary gene type that are rare. Ask a doctor .....it happens
It can be possible if both parents carry recessive genes for negativity.
Yes, the possibilities are A pos or neg and O pos or neg, see the related link.
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.
yes its likely that the child can be a negative even though that both parents r a positive.
No, O is recessive and A is dominant.
No, child can't be A positive ,if both parents are O+. Type O blood group is recessive over A,B and AB.If both parents are O+ then they have Io Io genotype,crossing will not …give A genotype. For A blood group any one parent should be heterozygous or homozygoes for A genotype.
My cousin uses to work for the Blood Transfusion Service and I was asking about this some time ago - the answer is no. :)) I'm not sure if this is the proper way to add my ans…wer, but here it is: My husband and I have five children; I am A- and he is A+. Our first two children were A+ like my husband, but our last three have been O+. I don't know how it happens, but I now know it can! (Yes, I get teased about the mail man!)
They could only produce a child with B+ blood.
Can parents with O positive blood type and B positive blood type have a child with A positive blood type?
no they cant, simply because the A positive blood type is determined by the allele they lack. people having O blood type have ii genotype, while B positive blood type can have… either I(B)I(B) or I(B)i and the same way for A blood type. Thus, the parents not having the I(A) allele cannot have a child with A positive blood type
No, an O-group set of parents can never have children with blood that is not also O-group. They lack the necessary B allele.
No. They could have an A- child, but not A+.
No. If both parents are type O, the child will also be type O.
No. A person with type B blood can have a genotype of BB or BO, the person with O has to have OO, so there is no way they can have a person with blood type A.
Yes. If mother was A/O RH pos (D d) and Father is A/O RH neg (d d), then they could have a O positive child. One only needs one big D to express the RH positive gene.