Is it possible for a man with Type AB Blood to be the biological father of a daughter with Type O Blood ?
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Type AB blood has both antigens A and B, but O has both antibodies a and b. Now a and A are incompatible similarly b and B are incompatible due to which clumping occurs excessively and no such combination is possible.
You should've mentioned if the father was the biological father of the said daughter. On the other hand is a really good explanation of your idea.
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Thanks for your second comment. And I think the first comment is directed at the problem poster. @Angela Fajardo though it is pretty obvious that by father you mean biological father, it is giod to mention it to prevent arise of doubts. Thanks @Ada Dönder and great problem Angela :+1:
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Edited it. Thanks :)
Isn't it the case that blood type is genetics though? The father could carry a recesive gene for O type blood and pass that on, right?
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Yes, one question arose in my mind:- Is O+ recessive or dominant. I know tha5 O is is, but whej rh antigen is connected I am not sure XD
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We don't know if the blood is positive or negative. The question just says O and O-Neg type is recessive
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@Amol Garg – Yes, but what about O+ ? In our solution, we might have to be aure of that case before telling that AB is dominant over O, right?
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@Ashish Menon – Guess that the whole gene is recessive so both answers work. http://www.cccoe.net/genetics/blood.html
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@Amol Garg – Are you sure that O+ is recessive. If yes, thank you very much for information. If no, then plz reconsider. :-)
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@Ashish Menon – Haha... Just realized that if the father has AB blood then he carries phenotype for A and B. There's no chance that he has O recessive in the first place. Thanks for the replies guess this solves that problem. :)
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@Amol Garg – Oh my gosh, didnt see that coming. So, there is no concept of blood group O here, right?
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@Ashish Menon – Nope haha :)
Antigens are related to antibodies but the dominance should also matter genotype OB possible without clumping.
Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits. Blood type A and B alleles are dominant while O allele is recessive. When a person has A allele in a chromosome and O allele in another chromosome, he will have type-A blood, similarly, BO allele pair gives type-B blood. Of course AA and BB give type-A and -B blood respectively and AB gives type-AB blood. A girl with type-O blood must have both O alleles, one each from her father and mother. A man with type-AB blood does not have O allele, therefore he cannot father a type-O blood offspring.
A & B are dominant traits in the blood group AB. So either A or B will be passed to the daughter by the father. Irrespective of the blood group of mother A & B are dominant over other blood groups. Even if mother has genotype OO, A or Bill be dominant. Since O is recessive it will not be expressed by the daughter.
AB x O -> BO / AO Becouse father don't have blood type O
That's right, if any parent has AB blood group, then the offspring cannot have O blood group.
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