Genetic disorders MCQ - Practice Questions with Answers

Thalassemia is an inherited disorder in which haemoglobin chain production is defective; severe cases, especially thalassemia major, need repeated blood transfusions for survival. The Y-chromosome claim is wrong because thalassemia is not a Y-linked disorder. The statement that patients manufacture normal haemoglobin is opposite to the disease mechanism. The RBC-producing-genes wording is imprecise: the core defect concerns globin-chain genes that affect haemoglobin, not genes for producing red blood cells as such. Hence the transfusion statement is the most appropriate among the printed choices.