In RBC development, Haemoglobin first appears in: (A) Basophilic erythroblast, (B) Polychromatic erythroblast, (C) Orthochromatic erythroblast, (D) Reticulocyte
Answer is B. Polychromatic/ Intermediate erythroblast is the stage where haemoglobin first appears in RBC development.