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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
Answer Yes. Because, the parents could both be B Rh positive O Rh positive. But, if the parents did not both have O Rh positive then, no.
Yes, if both parents carried the recessive O.
Yes.In the case that his wife has an A blood group,either A+ or A-. Yes.In the case that his wife has an A blood group,either A+ or A-. Yes. In the case that t…he mother has an blood group of A, (either A+ or A-).
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.
I believe that A is dominant over O blood type. I do know that the negative and positive could be either.
Yes, if they both have genes that are AO.
No, O is recessive and A is dominant.
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!)
We are looking for the possible blood types of a baby. Parental information: Mother type O neg -- genotype: OO and Rh (--) Genes: O and (-) Father …type O neg -- genotype: OO and Rh (--) Genes: O and (-) Baby recieves one gene from each parent: Baby is type OO Rh (--) since these are the only genes available from parents NO. Without a contribution of at least one Rh(+) gene from a parent, the baby cannot have blood Type O positive.
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. If both parents are type O, the child will also be type O.
Yes, but only if the parents are heterophiles for the positive gene (each have one positive and one negative gene).
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.
Blood type B or Blood type O