HbH is characterized by:
Ans. A. Deletion of three alpha chain genesAlpha-ThalassemiaSilent carrier state1 gene deletion-aaaa thalassemia trait2 gene deletion-a-aHbH disease3 gene deletion---aHydrops fetalis4 gene deletion----
Deletion of three alpha chain genes
Deletion of three alpha chains and one beta chain genes
Deletion of two alpha and two beta chain genes
Deletion of four alpha chain genes
Anemia and RBC Disorders