I don't understand how it all works as someone told me it could be O but I thought it was one or other of parents?
2006-08-07 22:36:03 · 36 answers · asked by Anonymous in Pregnancy & Parenting ➔ Newborn & Baby
No, a child doesn't always have the same blood type as one of the parents. The blood type is determined by the *genes*, one of which is inherited from each parent.
Your baby could have *any* blood type and be either positive or negative. There are 3 different blood type genes--A, B, and neither. Someone with no typed genes has blood type O. Someone with both an A and a B has blood type AB. Otherwise, blood type is determined by the typed gene(s).
So, if your type is A, you may have 1 or 2 A genes (and one untyped gene, if only one A). Your husband is the same with B. If you both have 2 typed genes, then all your children will have type AB blood because they will all get 1 A from you and 1 B from him.
But...if you have only 1 A gene, then your child could inherit your untyped gene and have blood type B. If your husband also has only 1 typed gene, then the baby could get that gene, too, and even have blood type O.
So, it all depends on the specific genes you have. Short version:
AA/BB--100% of children will have AB blood.
A/BB--50% chance each child will have AB, 50% will have B
AA/B--50% AB, 50% A
A/B--25% each AB, A, B, O.
The Rh factor is similar, but less complicated. There are only 2 choices: positive or negative. Two negatives give you negative blood. One or two positives give you positive blood. You may each have one or two positives; if either or both of you has 2 positive genes, all your children will be positive; if you both have 1 positive and 1 negative, each child has a 75% chance of positive and 25% chance of negative.
Note that "each child has a 25% chance of type O blood" doesn't mean that if you have 4 kids, one of them will be type O. You could--by pure coincidence--have 4 kids with type O blood.
2006-08-07 23:31:53 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Blood group is a genetically controlled character as all characters. the human blood group system is called the ABO system. We get our blood groups from our parents. It depends on the genetic composition. Eg: having A+ blood group you can have a genetic composition of AA or Ai. This is because the genes A & B are codominant. Having a composition of AB would make you AB+. So if you have a blood group of A+ your genetic composition could be AA or Ai while your husband could be BB or Bi. So the possible blood groups your child can have are A, B, AB and O!!!! We cannot exactly say this because we don't know your husband's & your exact genetic composition.
2006-08-08 02:48:29 · answer #2 · answered by Shankarie 1 · 0⤊ 0⤋
The baby shares the mothers blood so your baby will be A+, in some very rare situations the baby could take after the father but this would mean that there would be complications after the baby was born and could result in blood transfusions shortly after the birth. Although this is very rare so nothing to worry about. The baby would not be an O, but if you have any concerns then ask your midwife.
2006-08-07 22:42:20 · answer #3 · answered by Chrissi 2 · 0⤊ 0⤋
Often the baby will take the blood type of one of the parents, but that's not always certain. It can be most any blood type that runs in either family. Your Dr can check the babys blood type before it's born.
2006-08-07 22:42:01 · answer #4 · answered by David T 4 · 0⤊ 0⤋
Blood types are genetic, but go back for generations...the baby can have any blood type that either of you have, or your parents, or grandparents, or great grandparents... To get the exact number of generations your blood type can come from you might want to call the America Red Cross or your other local blood center...they should have the info.
2006-08-08 03:16:13 · answer #5 · answered by Jacob's Mommy (Plus One) 6 · 0⤊ 0⤋
nicely my mom is O- and my dad is A+ and that i'm A+. My exhusband is O- and our oldest son is A- so he took a sprint of the two one individuals. With the two certainly one of you having B blood the infant might have B blood yet might nicely be the two + or -. Blood type does not have something to do with making a sprint one however different than with regard to RH component which will reason fertility issues.
2016-12-11 04:56:30 · answer #6 · answered by ? 4 · 0⤊ 0⤋
There's about a 50% chance your baby will have A+. However, it could be anything.
You'll probably find that one of the babies grandparents is A+ and another is B+. If the other two were type O, that's also a strong possibility.
2006-08-07 22:45:55 · answer #7 · answered by Anonymous · 0⤊ 0⤋
You're baby could be born with type "o"
1 out of 5 of my children were with the parents having the blood types you mentioned.
Congratulations on your upcoming happy event
2006-08-07 22:39:32 · answer #8 · answered by witchfromoz2003 6 · 0⤊ 0⤋
Could be any blood type - babies don't have to have the same blood group as their parents.
2006-08-10 23:40:03 · answer #9 · answered by Kerry K 6 · 0⤊ 0⤋
Well, you could each be AA or AO or BB or BO. You've each got two genes for your blood, one from each of your own parents, and O is recessive, so you both could have an O in there - or not! Sooo... your baby potentially could be A0 (A), BO (B), OO (O), or AB. Congrats on the baby!
2006-08-07 22:42:25 · answer #10 · answered by Cedar 5 · 0⤊ 0⤋