<prompt> Feature of fetal RBC in adult -Alkali denaturation resistantSmall in sizeHas more 2,3 DPG levelMore iron than adult RBC.  <response>: Ans. is a Alkali denaturation resistant Features of fetal RBCs.It contains less 2,3 DPGIt is alkali denaturation resistantIt is larger in size than adult RBCIt contains less iron than adult RBC 