1) well as fair as DNA complication goes i believe that one is handed over to centipede's. They have something like 40ploid structure compaired to human diploid (they have 20 times more DNA in other words)
2)as far as as good as it gets, nah there are far more amazing creatures out there than us, physically, instinctively, but not intelligently. our DNA has one strength which makes us far far superior than any other organism (yet it makes you think we also had no super predators such as dinosaurs like T-rex or Alleosaurous chasing us and perhaps we would have relied more on instinct than intelligence, if there were super predators we would have a very slim chance to embrace our intelligence.)
3) as far as DNA change, it takes millions of years anyways, but ours will change dramatically as an effect of genetic engineering, our will to play god in our world, will destroy mother nature. (but perhaps not in time for us to pollute the plant or move to another one)
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