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.
In recent years, Madrid has also become the European hub for sports as the city played host to the 2010 Champions League final in the Real Madrid Santiago Bernabeu Stadium. Madrid is located in the center of Continental Spain and therefore makes an excellent base to travel to various corners of Spain.