Question: what is the difference between beta thalassemia major and minor?
Answer: They are thalassemia minor and thalassemia major (which is also called Cooley's anemia). Thalassemia minor: The individual with thalassemia minor has only one copy of the beta thalassemia gene (together with one perfectly normal beta-chain gene). The person is said to be heterozygous for beta thalassemia.