<prompt> A feature of fetal RBC in adultAlkali denaturation resistantSmall in sizeHas more 2,3 DPG levelMore iron than adult RBC  <response>: Features of fetal RBCsIt contains less 2,3 DPGIt is alkali denaturation resistantIt is larger in size than adult RBC Larger in volumeIt contains less iron than adult RBCLife span is less. 