Yes you can, I had undergone Bone Marrow Transplantation in 2002, my sister(Donor) had O+ve blood group while mine was O-ve, only HLA matching is required and blood group doesn't matter.
no you cannot he will die
Only a physician would be able to tell you this after very extensive bloodwork.
no
Yes, O- is a universal donor.
No
It depends what blood type of blood you have if you are not an o plus you can't do it
No - a pos can not donate blood to a negative
No. Someone who has B blood can only donate to someone with AB blood and B blood. Someone with O blood can only take O blood.
omg i like donuts
Type O can donate to any other type, but can only receive a donation from another Type O.
who donate to group o negative?
Nope - O negative is the only group that can be safely given to the patient if their blood group is unknown.