Foetal hemoglobin has great affinity than adult hemoglobin because
Its polypetide chains bind very fast with Oxygen
It binds 2,3 DPG less avidity by Gamma polypeptide chain than HbA
Its concentration is very high
Foetal blood gets oxygen from the mother
(B) It binds 2,3 DPG less avidity by Gamma polypeptide chain than HbA
Explanation: