MadSci Network: Evolution |
This isn't a loaded question, is it? 8-) As far as I know, DNA has not been spontaneously created in an experiment such as you mention. Here's a good interview with Stanley Miller that gives his current opinion of the state of play: http://www.accessexcellence.org/WN/NM/miller.html That DNA has not been made in such a way does not stand in the way of claiming that life arose from chemistry without some sort of divine intervention. Absence of proof is, as everyone should appreciate, not proof of absence. In this case, there is good reason to believe that the processes took place over millions of years, and were not guaranteed to produce biochemistry as we know it anyway (a totally different biochemistry could have arisen, with different 'frozen accidents' built in: e.g. why not have biochemistry based on D-amino acids, not L-amino acids? No reason.). So, OK, nobody has shown that DNA can arise from prebiotic conditions, but then again, nobody has shown that it can't. There are two options: chemistry did it, or God. Both suggestions are valid, but chemistry is the simpler and likelier reason, IMHO. Besides, what about this for a scenario: Claimant: Because DNA can't be made from primordial soup, God exists Researcher: New discovery! DNA made from primordial soup! Claimant: Err, so God doesn't exist then? It's not wise to attribute the unknown to the divine, because you never know when knowledge will catch up with the unknown; and where will divinity be then? Ewen McLaughlin
Try the links in the MadSci Library for more information on Evolution.