Ido not understand this peeeaaassseee

If a robot fixed another robot is it a engineer or doctor?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Asegment of dna that codes for rna and a protein is a