is it possible for a type a person married to a type B person have type O children? why or why not ?
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.
74469
Type 1 is not always being born with it, I am type one and was 36 when diagnosed, it is rare to have type one at my age but it is not unknown either, diabeties is also hereditary. also can be associated with autoimune syndrom, thyroid problems and also ceoliac, my doctor said the 3 are linked
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.
228460
Codegirl gave a great answer, although she left out the possibility of your husband being AB and giving an A to make your child AA.  All I'd add is that you have to understand the difference between phenotype (which is the expressed form) versus the genotype (with is the combination of genes).  When you and your baby were typed, they only look at the phenotype, not the genotype.\n\nA person tested as A can be genotypically AA (A from both parents) or AO (A from one parent; O, which is recessive, from the other).\nA person tested as B can likewise be BB (B from both parents) or BO (B from one parent, O from the other).\nA person tested as AB must be genotypically AB, getting one from each parent.\nA person taht is tested as O must likewise be OO, getting O from each parent.\n\nA parent gives one of their two alleles to their child.  If you are AB, you could give your child either A or B.  Since their are two possible combinations of alleles that make A (AA and AO), the father might have contributed either an A or an O.  So the only thing known for certain about the father's genotype is that he is NOT BB.  He could be either AA, AB, or AO (and contributing an A to make your child genotypically AA), or he could be either BO, OO or AO (and contributed an O to make your child genotypically AO).  But phenotypically, the father could be anything: A, B, AB, or O.
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       ------------
216102
NO IT IS NOT\n\nThere are only 2 alleles controlling blood type, which means you can ONLY be either AO, BO, OO, AB, BB, or AA.  \nBoth A and B are codominant, while O is RECESSIVE...which means if one parent is AB and the other is OO there is no way both parents can contribute 2 Os to make a child with that blood type.  \n\nI found this on the website listed below also, for clarification:\n\nParent types:           AB and O   \nPossible types:        A, B   \nImpossible types:    AB, O
143689
The easiest way to understand it is to look at a picture. There's one in the source link at the bottom that has a chart so you can look up both parents and find out about the child. The site also explains why ABO blood typing is not an absolutely reliable test of parenthood, and it explains how the rh factor (the + or -) works. The baby does not have to be the same as either of its parents. Be careful. A lot of people who think they understand this really don't.
464565
I believe it is possible.  My son met his wife over the Internet and they are very happy and good for each other.  Like anything, you have to be careful because there are a lot of idiots out there.
177249
No, at least one parent must have an "A" allel to pass on. This is Biology 101.
30692
Yes, but there is an increased risk of their child also having Down Syndrome. Sometimes very mentally retarded people are sterile though, so if this is a question pertaining to a certian someone you know, they'd need to get a check up to find out for SURE.
1004572
Yes.  O is a recessive gene, in this case, it doesn't produce an antigen.  A and B are both dominant, in this case, they both produce an antigen.  If the mother is BO and the father is AO, and both parents pass on the O gene, the child will be bloodtype O.
802960
The women and the man would have a heterozygous geneotype\n\nThe woman's genotype would consist of a gene for B blood and for O blood.\nThe man's genotypes would consist of a gene for A blood and B blood.  \n\nSince O is a ressisve gene, A and B would dominiant the blood type for their children who could have an A, B or AB blood type.  \n\nFollowing a basic 2 x 2 Punnett square, the statistics of a child getting a homozygous B blood type would be 1/4; a AB blood type would be 1/4; for getting a heterzygous A or B blood type with a ressive O gene would be 2/4 or 1/2.
93688
It would take a special man but I know they're out there.  My brother is one of them.  He took on the responsibility of another womans two children when they were very small.  They've since had two of their own and things are great for them.  They've been married for about 8 years!
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
1092042
no\nAB + A will result in A,B,or AB type blood  O can not be a factor
385194
Yep, we each have two set of chromosomes (genes), one from each parent. There are dominant genes and recessive genes. Mother has an A gene (dom) and a O gene (res), father has a B gene (dom) and O gene (res). The child can have one of 4 blood types A ( A mother, O father), B( B father O mother ), AB ( A mother, B father ) and O ( O mother, O father ) The negative works the same with + being dominant, but both parents are negative.
927834
To answer this question you must look at it through a punnet square.\n\nMother- I^A I^B\nFather- I^A I^A OR I^A i  (i = Type O)\n\nThe mother being Type AB defines for us each of the alleles that make up here blood type: I^A and I^B.  \n\nThe father being Type A provides only one clue: that he has at least one A allele.  Because an A allele will mask an O allele, it is impossible to know whether or not he has homozygous for Type A blood (I^A I^A) or if he is heterozygous for Type A blood (I^A i).  Even as a heterozygote, the father will express Type A blood.  \n\nFor this reason you must create two separate Punnet Squares.  In one the father's genotype will be I^A I^A and in the other his genotype will be I^A i.  In both the mother's alleles will remain constant with I^A and I^B.  \n\nYou will realize, however, that because the mother has no Type O allele (i), there is no possibility that any of their offspring will have Type O blood.  This is because Type O blood only appears when both alleles are for Type O (i i).  Since the father has possibly one O allele, and the mother has no O allele, a homozygous genotype for Type O blood cannot happen.\n\nGood luck!