Blood Type | Ask the Geneticist (SM)


	Question		Date



	my blood type is o+ while my wife is blood type a. my son's blood type is also type a. is it possible for my son not to follow my blood type? thank you in advance View Answer		2009-09-13


	My question: My mother is B+ blood type My father is O+ blood type I am AB+ blood type. I am under the impression that this is not possible and it might be that my father is not actually my biological father. Is my blood type a possible out come based on their blood types? Thank you. View Answer		2009-08-11


	My mother is A- and my father is O+. Is it possible to have A+ as a blood type if they are my biological parents? View Answer		2009-08-03


	My father is AB pos., my mother is 0 pos., my sister and I are both 0 pos. I know an AB isn't supposed to father 0 children. But, both my father's parents were identical twins. My dad is very fair with blue eyes and blond hair. My mother had brown hair and brown eyes. My sister and I both have her coloring. But, my hands, toes, body shape, and face shape are my fathers. My father's sister has fraternal twin boys, I have fraternal twins boy - girl. My question is could my father have been a CIS- AB. Is it possible my sister, my father or me are chimeras? My twins look very different. One is a strawberry blond, and her twin bother has dark hair and eyes. We have no abnomalities except I had three teeth. in one tooth a baby tooth, then a regular tooth, and another under that one. Also, on my mother's side there are identical twins which skiponly one generation. my parents were close and verymuch in love. View Answer		2009-07-30


	How does it work when the mother has blood type A+, the father has father is B+, the son has O+, and the daughter has AB+? Is it possible? View Answer		2009-07-22


	My mother was typed as O - Du + and my father has A + blood. I have O - blood, but I was born (in 1977) with severe jaundice. Can a Du + incompatibility possibly cause jaundice? And does that also mean that I have regular O - blood rather than O - Du + blood like my mother? I'm not sure I actually know what the Du + part of my mother's blood type is. Does negative Du positive blood pass genetically or is it something that occurs to a person later in their life or during a pregnancy? View Answer		2009-06-05


	I have four children. three boys one girls. my oldest son has blood type A+. my next son has blood type O. the other two i am not sure just yet. my second son is going through some kind of behavioral isues. He is very different from his siblings. I have had him diagnoise with many specialist. my son is a habitual liar, conpulsive theft, has no empathy for what he does. always looks sad. quite and to himself. people see this in him too. I was wondering if the blood type does have an affect on people and their disposition. If so, where can I go to get help for my son before it is too late. I have taken him to many people. been on meds, does not make it better. I am looking for help for him. View Answer		2009-05-15


	My son's blood type is A+, his cord blood type is AB+ What does this mean and should they be different? View Answer		2009-05-01


	I have 3 children. There blood types are A+, A-, O+. My husband and I are both O+. Everything I read tells me two of my children are not mine. They resemble each other and look like both families. Is it possible for them to be any other blood type but O? I know they are mine and my husbands just because of there looks. I would like to know the reason it is possible. View Answer		2009-03-22


	I HAVE A CHILD WITH O POSTIVE BLOOD THERES A CHANCE OF IT BEING TO 2 DIFFERANT MEN ONE HAS O BLOOD TYPE AND THE OTHER HAS B AND IM APOSTIVE WHICH ONE DOES HE HAVE AS THE FATHER View Answer		2009-03-10


	My blood type is O+. My daughter is A- and my Son is B+. Dad is wondering what his blood type could be.. I told him that his doctor would know that stuff. What could dads blood type, possibly be? Is this humanly possible having A- and B + children when I am O+ or should I be taking a look in the ol' little black blook?? View Answer		2009-03-06


	Can a father with A blood and a mother with O+ blood have a child with O+ ? View Answer		2009-02-04


	i'm 8 months pregnant and is very important for me to know my baby's blood type. i'm b+ and my husband is b- what could be the possible blood type for my baby. the reason why i ask is because my husband uncle has 2 children who are autistic. View Answer		2009-01-22


	My husband and I are O+, our youngest daughter has A-. She is our daughter and he is her father. The only person in the family with the A blood type is my maternal grandmother. There is no history of the A blood type in my husband's family. Could I actually be Ah, part of the bombay blood group? Since my mother also has been typed as O+ would this mean she also was really Ah. I am also a twin which the doctor hinted could be an influencing factor in all of this. View Answer		2009-01-02


	My Maternal Grandma was Rh- (1 sister with 5 children, 2 brothers no children), my mother(only child) is Rh+, I am Rh+ Am I a carrier of Rh-, can any of my children be Rh- or carriers of Rh- ? View Answer		2008-12-30


	My partner and I have been trying to have children for over 2 years. I have never been pregnant and he doesn't have and children. His blood type is O+ and mine is A-, will we be able to have children? View Answer		2008-12-12


	I am 28 years old and I am 5 months preganant. I had my blood type tested as is standard procedure. My test results came back O negative. I knew that I was O positive so I went to the blood bank and got the print out saying so from past donations. My doctor seems confused by this. Can you give me some details as to what this means. When I was pregnant with my last daughter in 2001 the same thing happened but i did not know what my blood type was at the time so they gave me the shot. At the time of birth they said I was O+ and it was never needed. Can you please help me with some details on this. None of this happened with my son in 2004. I know that I'm pregnant with a girl again. Is it a girl thing? I can't find any info anywhere. Thanks View Answer		2008-12-11


	My blood type is O Rh Negative. As I understand it the "Negative" pertains to the missing "D" antigen. My question is would it still be possible to have other antigens attached to my blood, as those found in rare bllod, or does "Negative" mean no antigens at all? View Answer		2008-11-16


	My dad's blood type was 0, all my siblings are 0, I'm A-. I don't know my mothers blood type. Both my parents have died. How can I find out my mothers blood type? Is there any other way to find out? View Answer		2008-11-02


	recently i have learned my father was blood type B mother type O my older brother A, me O and little brother B..and then learned that my wife is O but our daughter is A...i am now throughly confused because on some of your answers you say that is possible...it has caused quite an upstir in our family....can you please clarify and give me a correct answer....is this all possible?? View Answer		2008-11-01


	Can Sibilings with the same Mother and Father have diffrent blood types? For example can a Mother and Father who are both O+ have children together that are O+ and O- View Answer		2008-10-23


	I just reconnected with an old boyfriend that can be the father of my 23 year old son and they both have O+ blood types does, what are the chances from 1 - 10 the he is my son's father. I don't know my blood type. View Answer		2008-09-07


	My husband and I are both O negative. We are expecting a child. Will our baby be O negative or is there a possibility for it to be 0 positive?? View Answer		2008-08-19


	I have tried to get my mother to tell me her blood type. She says she doesn't know! She has had 6 children so I am sure she does but just refuses. My question is this--- Can you tell a blood type from anything other than a blood test? EXAMPLE--- DNA from a hair brush or tooth brush? View Answer		2008-08-17


	If the mother is A Rh+ and the father is A Rh- what could the blood types of the baby be? View Answer		2008-08-16


	I am the mother of 2 children with A negative blood and I have O negative blood (rec'd RhoGam during my pregnancies)...what blood type could my husband be?? He thinks he is "A" but isnt sure. Can you help us figure out the possibilities?? View Answer		2008-08-08


	My husband (age 47) has always believed he was adopted for several reasons. One of those being that both his parents and his two brothers and two sisters all have A positive blood and he is the only one with A negative. Is it possible for him to have ANegative when both parents are A positive? Would really be important to both of us to have an answer to this. Thank you View Answer		2008-07-25


	My Father has type AB blood. His mother was type O, and his father B. Ideally, this is not supposed to be possible. I've been reading up on the Bombay phenotype which seems the most plausible answer, except that we are Caucasian. Our genealogy has been well documented with our no one in our family being anything except Northern European, and no one coming from Europe since the last potato famine. I know the odds of a European having it are 1 in a million. So, I was wondering if there is any other explanation for the discrepancy besides Bombay. And, yes, we know that is his mother for sure. A few years ago, after his parents died, he ran a DNA test against his sister who has O blood, and it came up a complete match, both his parents are indeed his parents. He hasn't looked into it any further though, so your thoughts would be appreciated. Thanks! View Answer		2008-05-21


	Hi I am B+ and my husband is A+ and my daudhter is B+ but my son is O+.Why is my son O+ is that possible. View Answer		2008-05-07


	My husband and I are both O+ blood type. My youngest daughter is B. How can this happen? The nurse at the hospital where we had her said she could have gotten it from an extended family member. Is this true? Any answers would be greatly appreciated. View Answer		2008-01-25


	my bloodgroup is b+ and my husband is a+ we r trying to concieve from last 6 months but we cant View Answer		2007-12-13


	I've heard of blood types having an effect on one's personality. Is this a valid concept? View Answer		2007-11-26


	if i am ab positive and this girl is o negative is it possible to have an a negative baby?if so what is the probability? View Answer		2007-10-26


	My question is I have two grandkids and one blood type is A+ and the other is O- their mom blood type is A+. Now I did some research and for out for the A+ child her father can only have the blood type of A,AB,B or O. And the other child is O- the father can only have the blood type of A,B or O. We haven't done a dna test yet, but wouldn't this be a clue that the 2 kids would have different fathers since the cenerio of the the fathers blood type are different. Also I think they have different fathers since one child has a lazy eye that runs in her dads family and it is a very strong trait. All 3 of his siblings have this lazy eye even one of his parents and grandparent. I was told that since it seems that it was a strong trait that if one child had it all of the kids would have this condiction. Since the younger child doesn't have this condiction I didn't think this could be his child. Thanks for all your help. View Answer		2007-10-12


	My husband and I both have negative blood types, I'm B neg, he is O neg. Our baby was born with a positive blood type, O pos. We were assured by the doctors that this absolutely possible, despite what we learned in biology. How does this happen? What are the chances of this happening? I'm absolutely sure that my husband is the father of my baby. View Answer		2007-10-10


	My father's blood type is AB; my mother's is O positive; and mine is O positive. From what I've learned in school this isn't possible. Does this mean that my dad isn't my biological father? I really want to know the truth because I've been wondering about it for years since high school biology and I'm in med school now. Is there any scenario where this would be possible? View Answer		2007-09-26


	What are the blood type possibilities for children of two A+ blood parents. What are the blood type possibilities for children of A+ and B- blood parents.These questions relate to the rareness of blood types when making decisions about cord blood banking for our child. Thank you. View Answer		2007-09-26


	Is it possible for a father who is O+ to have a daughter who is A+? I do not know what her mother's blood type is. View Answer		2007-09-14


	I was born in 1949. My blood type is B+. My father's blood type was B+. My mother was type O. I was very ill throughout childhood. My mother constantly told me and everyone else that it was due to my father's bad blood. (Also I had a sister who was born 2 years before me with type O blood and apparently had no problems.) What would have been the problem here? View Answer		2007-09-02


	What is the letter "I" used for in blood type alleles? I^A(for A blood type); I^B (for B blood type), and ii for O blood type? View Answer		2007-01-26


	Please tell me about the Bombay phenotype blood condition. If I am O+, my wife is O+, we can have an offspring of A+. Thank you. View Answer		2007-01-08


	is genotyping for blood (for finding the allele combinations for individuals who are either type A or B) commonly done? Is it possible to have such a test performed easily? View Answer		2006-11-27


	If I am A+ and my husband was 0- how do we have 2 children with 0+ and 1 with 0-. View Answer		2006-05-23


	I am O+ and my fiance is A+. I had read that there is a higher likelihood of miscarriage or birth defects if people of these two blood types (when the woman is o+) conceives. Is there any evidence to suggest this is true? We are planning to conceive in the next year and I will be 37. It will be my first child and I have no known family history of genetic disease. View Answer		2006-04-25


	If my blood type is A+, and my wifes is O+ is it possible for our son to have O+ bloodtype? View Answer		2006-01-26


	I recently found out that my girlfriend and I, are both Blood Group O and RH type +. Is it true that a baby can be born with a birth defects? View Answer		2005-10-18


	Can a mother who is O positive and a father who is O positive have a child who is O negative? View Answer		2005-09-14


	How can parents with blood types A+ and B+ have a daughter with blood type O-? View Answer		2005-09-14


	How is blood type determined? View Answer		2005-09-14


	I was told I have Rh disease and will have a problem when I become pregnant. What does this mean? View Answer		2005-09-14


	If one parent has A+ bloodtype, and their child's bloodtype is also A+, what would the other parent's bloodtype be? View Answer		2005-09-14


	If the father has bloodtype A+, and the mother has bloodtype O+, can they have a daughter who is bloodtype O-? View Answer		2005-09-14


	Is it possible for two Rh+ parents to have a Rh- child? View Answer		2005-09-14


	My blood type is O- and both my parents are A+. My parents say the Army typed my blood wrong, I did three tests and they all came out O-. How can this be? View Answer		2005-09-14


	My boyfriend & I recently found out by donating blood that we both have "O" positive blood. We are planning to have a baby. Being that we both have the same blood type is that normal? Will the baby end up with birth defects? View Answer		2005-09-14


	My son's bloodtype is A positive. I am O positive. Can the father be O positive as well? View Answer		2005-09-14

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