<prompt> Which of the following is not seen on haemoglobin electrophoresis in homozygous sickle cell anemia?HbAHbA2HbFHbS  <response>: In homozygous Sickle cell anemia, Hb electrophoresis shows - 80-90 of HbS , rest is HbF and HbA2. - However, HbA is absent . 