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No that is not her brother. When his parents could not take care of him Whitney did but they are not even blood related. But apparently they are engaged.
yes probably. you dont have to have the same blood group as your siblings and even your parents, you could have the same blood group of any of your grandparents.
Could be anything, we all get our blood groups from our parents or grandparents.
Ab
both parents could be A heterozygous or one A heterozygous and the other O
Probably O+, but it could be any group, we all get our blood groups from our parents or even our grandparents.
Ask your parents.
Parents should re-test their blood types to check if there was any error in their past result. there is no way to have A blood type baby if both were O
By marriage yes as his thought of as distant uncle or uncle in law.And if ever intorduce him to someone outside family or talk about him you can just say his my uncle without going thought wifetales.
A half brother is a brother who you share one parent with. A double half brother is there-fore a brother who you share two parents with - and therefore could simply just be called a brother. The term however suggests that there was a discontinuity in your parents marriage, and that one of you was born after a reconciliation or remarriage.
If the parents had the genotypes AO and BO, then they could have a child with Type O blood (there would be a 25% chance of this occurring).
No, unless they adopt.