Yopaz said:
So there's no difference in introducing genes that would never ever occur in in an organism and using genes already present in the organism?
Can you please explain the reasoning behind that?
E. Coli could never have started producing human insulin without a genetic modification. A tomato could and have naturally evolved to have 3 carpels. With selective breeding we just used that mutation because it gave us bigger fruits.
What you're saying here is that there's no difference between possible and impossible.
Sorry, maybe I'm jumping in early here but I see two pages that I'm not bothered to go through to see where this discussion ends up.
How is it impossible for E Coli to have produced human insulin by selective breeding? It would take a prohibitively long time, but mutations are random. Eventually, there would be an E Coli with the gene needed for the very first step, at which point it would be selectively bred until every tedious stage had been completed and it produced human insulin. If we had enough time, we could have humans with feathers, solely through selective breeding, if we had mapped out the evolution of feathers thoroughly enough. Selective breeding is a scientific, human, unnatural process. The only difference in my mind is that scientists have much less opportunity to see unwanted side effects and much more knowledge of what causes what.
Oh, right, the topic...OT: Don't drink much coffee but even if I did I'm not worried. Everything increases your risk of something, and I'd like to see what the absolute risk of glaucoma is anyway. Also, more studies please. I find it hard to believe that caffeine alone doesn't do it but neither does coffee without caffeine in it, yet caffeinated coffee does.