My mother is A. My father is O. My blood type is O. Is it possible for me to be their child?
2007-11-25 16:33:56 · 9 answers · asked by Anonymous in Pregnancy & Parenting ➔ Pregnancy
sure, why not?
2007-11-25 16:37:10 · answer #1 · answered by harvardbeans 4 · 0⤊ 0⤋
Each ABO blood type is caused by a combination of two out of three possible allele types, A, B, or O. Blood types possible are AB, A, B, and O. The following combinations of alleles can produce the following blood types:
A and B alleles: Type AB.
A and A, or A and O alleles: Type A.
B and B, or B and O alleles: Type B.
O and O Alleles: Type O.
Your type O parent must have OO alleles to pass down. Your type A parent has one A allele, and either an A, or an O Allele to pass down. You get two alleles: one from each parent. Your O parent had to give you an O allele. For you to be type O, whoever your real parent is must have given you an O allele. Your A parent may or may not have had an O gene to give you. If that parent's genes were AA, they could not be your biological parent. However, it is just as likely that your A parent has A and O alleles, in which case, they had a 50% chance of giving you the O allele and making you AO. A person with the AA allele would have needed both parents to be type A or AB, and most of their family tree would likely be type A, without many type O appearing at all. A person with the AO allele could have parents of any blood type so long as no more than one was type AB, and there would probably be a few type Os appearing in the family tree.
Are you wondering if your mother slept around? I can calculate the odds, but won't get much of use. Based on the blood types given your parents have at least a 33% chance of being related to you. So long as none of the children are type B or AB, it is impossible to tell whether or not these two parents were unfaithful based on blood type alone.
2007-11-26 01:49:19 · answer #2 · answered by ye_river_xiv 6 · 0⤊ 0⤋
That would be a yes. Sounds like something has prompted you to question whether they're your parents or not, you could find out about getting a DNA test which would be much more conclusive than just blood types, but yes, with these combinations you could definitely be their genetic child.
2007-11-26 01:01:22 · answer #3 · answered by Joy H 4 · 0⤊ 0⤋
Yes. The genotype for A type blood can be AA, or AO.
Your mom must be AO.
The genotype for O blood is OO.
The genotype for + blood can be ++, or +-.
The genotype for - blood is --.
Need more info about offspring to figure out probability of the Rh genotype.
[ my parents are type A and type O also - three of us are o, and two of us are A.
My husband and i are A and O - we have one son that's A, and one that's O.]
2007-11-26 00:49:11 · answer #4 · answered by Nurse Susan 7 · 0⤊ 0⤋
yes it is, There are two types of A blood, AA and AO. Your mother must be AO and you got the O from your mother. This combined with the O from your father and Presto-you have O blood. it is the same sort of deal with the + and -. Sorry kid doesn't look like you're adopted!
2007-11-26 00:42:56 · answer #5 · answered by dreamlesssweetheart 2 · 0⤊ 1⤋
blood type doesnt work like that. You can easily have a different blood type then both parents.
2007-11-26 00:43:02 · answer #6 · answered by FunkyMonkey 5 · 0⤊ 0⤋
Of course it is.
My father's O-...I'm not even sure what my mother is, but she's definitely positive, but not O. I'm O+, my sister's O- like our Dad.
2007-11-26 00:37:27 · answer #7 · answered by Anonymous · 0⤊ 0⤋
yes, there is a 50 % chance of you being an O and 50% chance of you being an A, so you could be their kid.
2007-11-26 00:38:22 · answer #8 · answered by Give Peace A Chance 5 · 0⤊ 0⤋
i am A- my hubby is O+ and our son is O+
so i'm gonna say sure
2007-11-26 00:40:06 · answer #9 · answered by hotmomma21106 2 · 0⤊ 0⤋