This question is from "Concepts of Genetics," Klug & Cummings, 10e.
"Thalassemia is an inherited anemic disorder in humans. Affected individuals exhibit either a minor anemia or a major anemia. Assuming that only a single gene pair and two alleles are involved in the inheritance of these conditions, is thalassemia a dominant or recessive disorder?"
I know from a quick Google search that the disorder is recessive, but how would I come to this conclusion based on the question alone?
Edit: I've spoken to my professor, and he shared his opinion that is essentially the same as canadiener's answer. Thanks to everyone that replied!