I have couple of questions, if there are two main theories: virus came from lab or through evolution: 1) can artificial viruses be injected in wild animals? (I

I have couple of questions, if there are two main theories: virus came from lab or through evolution: 1) can artificial viruses be injected in wild animals? (I guess so) 2) can that animal then pointed as a natural source? (I guess so) I ask this because: 1) science has difficulty to answer what is natural and what is artificial, we have the whole genome, and yet we cannot tell if it is artificial or natural development 2) how could science say that virus in wild animal is natural or artificial? Why don’t we inject by protocol an artificial detection sequence when we do this kind of research?