I suppose one day, genetic engineering of this type might be possible. I imagine it will be an incredibly complex thing to get right.
At this point, I would bet on fully functional prosthetic limbs being more likely. There seems to be a lot of advancements in prosthetics, including connecting them to our brains.
Well currently scientists are looking into pig dna to recreate human organs so who knows! Maybe one day there will even be a real life jurassic park but that would probably be a very bad idea, in every way.
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