<prompt> Cause of alpha thalasemia -Deletion of alpha genesDeletion of beta genesExcess of alpha genesSingle amino acid substitution in alpha chain  <response>: Ans. is a i.e., Deletion of alpha genes a thalassemiasAlpha thalassemias are hemoglobin disorders in which the a chain of the hemoglobin is notpartly synthesized. a chains are required for all types of hemoglobin synthesis of all types of hemoglobin i.e.HbA a2 b2HbF a2 g2 HbA2 a2d2 