Respuesta :

O+       1 in 3        37.4%
O-        1 in 15        6.6%


O- can receive O-

O+ can receive O+, O-

O  can receive O, A, B, AB
O- Blood is a universal blood type, it can be given to anyone in need.
O+ Can only be donated to people with either O+ or 0- blood types.