Does the blood type change to the new blood type after a blood transfusion for neonatal hemolytic disease?

Patient's question:

Patient Age: Newborn with hemolytic disease, born nine days ago

Doctor's answer:

Analysis of the condition: No. Blood type is determined by genes, genes are genetic material, and are unchangeable, so blood type cannot change. Suggestions: Neonatal hemolytic disease must receive blood of the same type as the newborn! Genes are genetic material and are unchangeable, so blood type cannot change.