Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement:
1. | Both are due to a quantitative defect in globin chain synthesis |
2. | Thalassemia is due to less synthesis of globin molecules |
3. | Sickle cell anemia is due to a quantitative problem of globin molecules |
4. | Both are due to a qualitative defect in globin chain synthesis |