In some cases yes, but most of the time no, all animals have to adapt to the ecosystem, if one thing is off the whole ecosystem fails, in hence not reaching homeostasis.
O positive is the most common blood type and most likely to be transfused.
O negative donors are the “Universal Donor.” People with O negative blood are universal red blood cell donors. This means that their red blood cells can be transfused to any blood type.
Answer:
Gene therapy is a medical field which focuses on the utilization of the therapeutic delivery of nucleic acids into a patient's cells as a drug to treat disease.
I think it is repeatable, testable, observable