The ABO system consists of A, B, AB, and O blood types. People with type A have antibodies in the blood against type B. People with type B have antibodies in the blood against type A. People with AB have no anti-A or anti-B antibodies.People with type O have both anti-A and anti-B antibodies.People with type AB blood are called universal recipients, because they can receive any of the ABO types. People with type O blood are called universal donors, because their blood can be given to people with any of the ABO types.eople with type O have both anti-A and anti-B antibodies. People with type AB blood are called universal recipients, because they can receive any of the ABO types. People with type O blood are called universal donors, because their blood can be given to people with any of the ABO types.
Previous (Social learning) Next (Social movement) Social mobility is the movement of the members of a particular society in terms of their social status, usually defined in terms of occupation and income (vertical mobility), or from one social group to another, not necessarily with concomitant change in social position (horizontal mobility).
âThere is little mobility because membership in a particular caste group is hereditary.â âThat is, there would have to be the possibility of both upward and downward social mobility.â âThis is the story of a sort of social mobility from cook to camp commandant.â âThe mobility is also part of an employment pattern of openness to new workplaces.â âThe middle class is large and for its members, upward or downward social mobility is rather easy.â âThe differences in mobility were most pronounced for people aged between 16 and 30.â