antigen
Antigens or RH factor
It is the antigens that determine ones blood group.
Yes
Yes, and this person can also receive blood from blood group type A and 0. If there are complications it is probably due the an other type of blood group, the rhesus blood group.
If person with O blood group receives blood of person with AB blood group it can cause rhesus factor but not other way round
chromosome 9
A person with O- blood can only get blood from another O- person.
A blood group 'O' person is called a Universal Donor from sue b :-)
Blood type does not determine whether marriage is allowed or not.
Yes, theoretically a person with AB+ blood group can accept blood of any other group. But practically it is not practiced.
Yes of course all blood types produce the same species of genes it just will help determine what blood type your child will have.
No - a person with that genotype would have blood group A. A person with O blood can only receive blood from an O donor.