Question 5. In humans, there are 3 alleles for blood type: A, B, O. A and B are co-dominant over O. A male with O type blood mates with a female with AB type blood.
The largest stadium in Spain is the Santiago Bernabaue in Madrid, it is Real Madrids stadium.
Camp Nou Football Stadium - FC Barcelona in Spain. Nou Camp Football Stadium -- Nou Estadi del Futbol Club Barcelona is the biggest stadium in Europe. This iconic football temple was first opened in 1957, helding around 93,000 spectators during those days.