If mother has the blood group of A + and Father  of AB+,is it possible to have their child to have 0+ blood ?
415479
No..."A" and "B" are codominant alelles (gene markers) for blood type, which means they are equally dominant over "O". Type A blood happens when a person either has one A  marker and no marker on the other side (type O), or both A; type AB is when a person inherits one A marker and one B. Type O really means there are "NO" surface markers (antigens) on the red blood cells, which requires that the person inherit type O genes from BOTH parents.  So the genetics would look like this:\n\nMom can be either AA or AO (both express type A)\nDad is AB (can't be anything else)\n\nThus:  Baby can be AA or AB if Mom is AA; baby can be AA, AB, AO, or BO if Mom is AO. But...baby cannot be Type O because OO is not a possible combination when Dad is AB.\n\nSince the blood type doesn't match, positive or negative Rh doesn't matter in determining the paternity.
916323
Yes,there should be worried if father is Rh+ and mother is Rh-.This also may not creat problem for thier first child because mother blood has not started  making antigen against Rh+.But after thier after thier first child has been born then, of course, mother has started making antigen.Then thier second child child will die of embryonic erythroblastosis.I think you have understand the process.
220878
yes there is a high likelihood that an HIV positive mother can indeed have a HIV negative baby if the mother follows strict guidelines and parameters set by her ID and OBGYN doctors.For more information on this topic and your other question please check out sites like poz.com, aidsmeds.com, thebody.com and inspot.org.
1115203
Can a man have, let's say, B+? Yes.\nCan a woman have, let's say, B+? Yes.\nCan they get married? Yes.\n\nExact same blood type will not be a problem. Only way for problem is if baby is + and mom is -. Only way for that to happen is if Dad is + and mom is -.
314497
All three of these answers above me are correct.  Your biological mother would have to be BO and your biological father would be AO and the O allele in each would be recessive, or not showing its trait because of the dominant a/b allele.  A Punnett Square would look something like this:  \nMOM    \n       ||||||||||  B |||  O  |\n       ------------\nD||     A| AB |  AO |\nA||     -------------\nD||     O| BO |  OO | <- That's you with type O blood.  If you had three siblings it would be likely that one would have AB blood, one type A blood, and one type B blood. \n       ------------
756279
As everyone has told you the only type not possible is O\nbecause to get type 0 blood which is recessive you would need a recessive allele from each parent. Obviously if you are AB (which are codominant) you do not have a recessive allele. The child could Inheret either the A alle or the B allele and would end u p with type A, B or AB blood depending upon the allele passed by the other parent.\nI see you also want to know if there are any blood types not possible for the children of a person with O type blood to get. Yes, a person with O type blood cannot end up with a child with AB blood because they have 2 recessive alleles. They could end up with children with A  B or O phenotypes
884520
The Landsteiner system works like this, there are A and B antigens. Blood group AB means anyone who has this group (not many do, but I'm one!) has both anti A and anti B on the surface of the red blood cells, but neither in the serum.\nGroup A will have anti A on the red blood cells and anti B in the serum, whereas group B will have anti B on the red blood cells and anti A in the serum. \nBlood group O (usually the commonest) has no antigens on the red blood cells , but both anti A and anti B in the serum.\nYou may have heard of rhesus negative and positive? That refers to the D antigen and there are Cs and Es and loads of other ways to group blood, but the ABO Landsteiner system along with anti D are the most relevant and best known.\n(hopes she's remembered her stuff from the path labs donkey's years ago!)
166617
They can't be the parents.  The baby is AB, so it has an A allele and a B allele.  Since bloodtypes are codominant, a person will have the B antigen if and only if they have the B allele (so they'll be either B or AB).  The parents are O and A, so neither one of them has a B allele.  The baby had to get it from someone else, so the father isn't the real dad.  Either they took home the wrong baby, or the mom was cheating with someone whose bloodtype was either B or AB.
118740
The child can have all possible blood types. \n\nA + \nB + \nAB + \nO + \n\nIt would be extremely rare, but the children can also end up with - blood if the parents both have the recessive gene for the Rh factor.
182595
People have either type antigen A, B, or a combination of both (antigen AB). The ones who lack both are thought has having type O antigen. The way our immunity works is by attacking any thing that it recognizes as "foreign". Any individual with blood with antigen type A will attack others individuals type B and viciversa. Individuals with antigen type AB will receive type A and B blood, because the blood perceives it as it's own ( thus called universal recipient); this means that this patient can receive any type of blood either type A,B, or O. O type of antigen means that the blood lack any type of antigens ( meaning that it lacks of antigen A or B); which means that when this individual donates blood, the other individual does not detect any antigen A or B in the blood; thus there is no reaction to it. Thus an individual with type O is called universal donor, which means it can donate blood to any type A or type B individual. Well that is the basics i hope you find it interesting
94669
Yes, it is possible. The type B person could be type BO and the B is dominant so they are type B. The type A person could be type AO and the A is dominant so they are type A. If a BO person and an AO person have children, they're children have 25% change of being type O.
439008
YES. Absolutely, despite all the answers you've received to the contrary. \n\nThe way blood groups are named, either your blood contains certain proteins (named A and B) or it doesn't - if you have both you are blood type AB; if you have only A you are A; if you have only B you are, you guessed it, B, and if you have neither you are blood type O.\n\nIf you have a gene for a blood protein, either A or B, you will have that protein in your blood. However, we have two copies of each chromosome, and it is possible that each parent has one copy of the A gene on one chromosome, and doesn't have it on their other chromosome (O). This means they will both be blood type A, since they each have one copy. However, if they have a child who happens to get the O chromosome from each of them, then the child will be blood type O. Mathematically expressed, each parent is AO, and on average their children have a 25% chance of being AA (blood type A and cannot have type O kids), 50% chance of being AO (blood type A but able to have type O kids), and 25% chance of being OO (blood type O).\n\nThis is the whole idea of recessive genes, which also explains why two brown-eyed people can have a blue-eyed baby without any hanky-panky going on.\n\nAs regards the Rhesus factor, i.e. the "+", again that is a recessive characteristic. The child must have received the Rh factor from his father, since his mother is negative. (NOTE that any Rh-negative woman who has an Rh-positive baby should get a shot of something called RhoGam, or WinRho, to prevent problems in future pregnancies.)
1139472
Rh + is dominant, - is recessive; the A blood type can be either homozygous or heterozygous (its multiple allelles), so babies could be O+ or O-, A+ or A-.
637142
no doesnt matter as far as blood groups go. AB, B, O whatever theyre all just as good. \n\nhowever, genetic testing to see if people carry a rececive gene that could result in diseases like cystic fibrosis or tay-sachs might be a good idea.... but you could always adopt or hope your kids dont get those diseases, so i wouldnt look to far into it. plus you might scare off your girl if you make her get all kinds of blood tests before you get married
740852
AB blood group system in Humans is the co dominant type\n\nIf Ur fathers blood group is AB X Mothers ?\n                                                  |\n                                                  |\n                                             Ur's is AB \n\n Answers--->\n--------------------\n\n1. Father AB X Mother AA ----> Ur's may be AA or AB\n\n2. Father AB X Mother OA (Means A-group)      ----> Ur’s AO or BO (means all will be A-group)    \n                               \n\n3. Father AB X Mother AB ---> Ur’s AA (A-group) or AB (AB-group) or BB (B-group)\n\n4. Father AB X Mother BB ---> Ur’s AB (AB-group) or BB (B-group)\n\n5. Father AB X Mother OB  (Means B-group)             \n\n---> Ur’s OA (A-group) or AB (AB-group) or BB (B-group) or OB (B-group)\n                       \nSo, Ur mother’s might be case  1 or 3 or  4 or 5  , but not  case 2
102601
Yes, type O can recieve type AB. I am a type O.:O) Any other blood types, more than likely your body will reject it. Along time ago my cousin had a tropical disease called dengue fever(mosquito disease) in tropical countries and she was a type O and the blood bank had little type O blood, so they mixed A and B blood together and it worked. She is now a happy and healthy woman. :O)
1169824
I am not for sure.  I know a person with M.S. can't....tell him to call a blood bank and ask them; they'd know.