Physiology Haemoglobin first appears in which stage of erythropoiesis? A Basophil erythroblast B Proerythroblast C Ohochromatic erythroblast D Polychromatophil erythroblast 💡 Explanation Haemoglobin first appears in which stage of erythropoiesis? ✓ Correct Answer: A. Basophil erythroblast