Gynaecology & Obstetrics Anaemia in Pregnancy 1fe8d213 Initial site of RBC production in fetus A Gestational sac B Yolk sac C Placenta D Fetal bones High-Yield Explanation Hematopoiesis - 1st demonstrable in yolk sac followed by liver and then finally spleen and bone marrow life span of fetal RBCs at term - 90 days