What is the relationship between parents blood group and the child's blood group?
It would never be a symbiotic relationship... the relationship would be parasitic (the flea benefiting from the blood and the moose being harmed from the taking of its blood). - Actually parasitism is a type of symbiotic relationship. any close relationship between two organisms is a symbiotic relationship no matter the conditions of said relationship
Well have you two discussed your relationship with your parents. Make sure they know about it so can understand the situation. But it perfectly for you two to date since you are not blood related. So you can continue your relationship, but be careful be remember if you two were to break you would still have to be around each other due to the relationship of your parents.
A blood relationship is found in families who are naturally related. For example, A Mother and a Father have sexual intercourse and produce a child (Girl) That is a blood relationship since they are made from one common blood. A family relationship can be between family, friends... pretty much anyone who you are really close to. Who you would classify as a Brother or a Sister.