How many molecules of dna would result from one molecule after four cycles of pcr?

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

Which image shows labeled organelles that are present only in plant cells?

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