<prompt> Main abnormality in beta-thalassemia minor is: March 2011Increased HbA2Severely increasedHbFSevere anemiaAll of the above  <response>: Ans. A: Increased HbA2 Haemoglobin electrophoresis in beta-thalassemia minor usually reveals an increase in HbA2 alpha2, gamma2 to 4-8 of the total hemoglobin normal 2.5 