Scientists Have Created Genetically Modified Organisms (GMOs) by Isolating and Then

Scientists have created genetically modified organisms (GMOs) by isolating and then transferring the jellyfish gene for green fluorescent protein into pigs, bacteria, plants and mice. The result was bioluminescent organisms! These experiments demonstrate that

A) jellyfish genes may be transferred into other aquatic ectotherms, but not mammals.
B) genes have no difficulty crossing the species barrier.
C) animal genes will not function if transferred into animals.
D) genes can only be transferred to other organisms within the same species.