Where do you think DNA comes from?

No, it doesn’t happen accidentally. But no scientist thinks that it does. Such accusations are the fodder for many creationist screeds, but they are far from reality. DNA did not suddently arise de novo from the ooze; it was (in a very abbreviated version) the culmination of many tiny chemical steps, starting with simple molecules and moving through self-replicating molecules that grew more and more complex, through RNA molecules, and then to DNA.

You can actually create a situation where ribonucleic acids (the building blocks of RNA) and deoxyribonucleic acids (DNA) are generated from just carbon, oxygen and hydrogen. So, as @crisw said, the prevailing hypothesis is that self-replicating RNA molecules formed early on, and eventually led to the production of proteins and DNA.

perhaps

I belive that it comes from your mother and your father. Just sayin’. :)

@crisw
And what actually caused these molecules to come into existence and then follow the path that led from them to us?

@dalton Why god, of course… Is that the answer you seek? Why don’t you come out and say it?

Sarcasm off.

@shilolo

The socratic method is one where the answer is not shouted from the teacher, rather it is elicited from those taught.

Thank you for your insightful advice.

@dalton Fluther isn’t school. Condescending to other users isn’t really appropriate, and, being a full-fledged scientist, I don’t think I need you to give me any lessons in biology, thank you very much.

Agreed with shiolo, it’s clear that you were leading a response to prompt a discussion about god and creationism right from the extended part of your question, or worst off just trying to make an obvious point.

If you’d like to talk about that, then ask a honest question that delves into where you’d to start off at, don’t play 20 questions with us where instead of 20 questions there’s an anvil.

@shilolo

You are certainly not much of a scientist if you act this way.

@artificialard

I see why you call yourself such. You are both being condescending and unfriendly… nice way to start off a newbie here.

@dalton
Well, for the coming into existence part, see your Big Bang question :>)

If you really want to look at one potential path from simple molecules to DNA, try this excellent article.

Interesting guess. But of course that’s all we have are guesses!

@dalton
Hardly.

Do you understand the difference between a scientific hypothesis, scientific a theory and a guess? If so, can you explain your understanding to me so that I’m sure we have the same foundation?

Certainly…hypotheses are guesses (sometimes referred to as educated guesses). Theories are hypotheses which seem, for the moment, to have proven true in our reality.

@dalton
So what do you think the difference is between a hypothesis and a guess?

And no, scientific theories are never “proven true.” In fact, to be vaid, they must be falsifiable.

You claim to know a bit about Hawking- as he said, ”. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory.”