If we were to find DNA on Mars, or in a meteorite from elsewhere, then the unique origin of life on earth is disproved.
We don't have proof in natural sciences. It would lend some amount of credence to the notion, but it certainly wouldn't be a proof of anything. Life could still have initially arisen on earth and spread to other planets.
Not saying that it could not have arisen from random processes. It is plausible, no?
Sure, I'd bet money at fairly good odds that some form of panspermia is a solid explanation for some of the timeline gaps, and other anomolies observed by Fred Hoyle, who was the kingpin of the panspermia racket. That does not, however, remotely make ID a science to the degree that it deserves space in a public school science classroom--unless you think the evidence for UFO's, crop circles, crystal healing, Bigfoot and Nessie, also qualifies for classroom space.
If we find that DNA sequences process for life in environments clearly different from that on earth, then it would be a reasonable guess that this germ of life is not natural. What do you think?
I think probably not. I think I would suppose that the place to start looking was that spore migration was somehow responsible, before I'd assume Goddidit, or Rigelian Space Lizards did it.
Again, it is not proof positive that DNA is not a molecule constructed from chance - it just seems to make the idea less likely. It could be an amalgam of possible life forms.
How will you find DNA sequences in silicon? How will you know that the sequences you are looking at have some analog with organic DNA sequences? Do you understand that DNA doesn't produce much of anything but long chain carbon complexes called proteins? What's the equivalent in silicon? Your suggestion doesn't make much sense to me.
But if we find sequences in DNA that encode processes in silicon that are cognates of processes in carbon - well, I would think that the matter is settled. DNA is a nano-molecule designed by a super-inteligence capable of genesis in many different environments.
There is no abstract DNA-ness that can be converted to a silicon template in a manner I can imagine. And even if there was, how does this point to super-intelligent meddling any more than it points to the propensity of matter to self-organize in chaotic environments?
LOL, that would have made for an interesting science class!
(Seriously, there is a current search for a North American primate in the Cascades - Bigfoot?)
There is no abstract DNA-ness that can be converted to a silicon template in a manner I can imagine.
Yes, silicon is far out. DNA is clearly bound in the H-C complex.
DNA produces highly organized protoplasm that carries out processes of life. Science would have us believe that DNA self-assembled at some point in time, and the molecule accidentally acted as a factory to produce other molecules that just happened to work together to serve and protect the DNA. And as these other molecules went about their duties, they accidentally fashioned a wide variety of structures and mechanisms that gave these bags of protoplasm the ability to move around, interact, and eventually, think and discover facts about the universe. And further, the protoplasm organized the DNA (or the DNA organized the protoplasm) such that the blueprint for an individual could be passed on. Fantastic!