See this excellant article in question and answer format regarding how the coding in DNA is very similar but much more complex than computer programming. This “coding” is present in every single living thing that has ever lived, so far as scientists know. In days past, scientists assumed that the earliest living things were simple blobs. But there is no evidence anywhere that early living things were simple–they all shared this same DNA code that is incredibly complex.
The money quotes:
Jeffrey: All right, so what do you, Dr. Stephen Meyer, what do you say caused the first life to have DNA that had this coding that would determine the shape and the destiny of this creature?
Meyer: Well, I think we’re looking at a distinctive hallmark of intelligent activity. Information, based on what we know from our uniform and repeated experience, which is the basis of all scientific reasoning about the past, always comes from an intelligent source. If you look at a hieroglyphic inscription or a section of machine code, or a headline in a book or article, and you trace it back to its ultimate source, it always comes back to a mind, not a material process. So, when we look, when we see that there’s information embedded in DNA, and we see that that information is necessary to the beginning of the first life, I think what we’re seeing is that there must have been an intelligence that was, that played a role in the origin of life. That’s the most logical thing to conclude.
Jeffrey: That designed DNA?
Meyer: That designed the information that is the source of the information of DNA.
Jeffrey: At the beginning. Now, that doesn’t mean that after DNA was designed and creatures were created, that things might not have evolved or gone through natural selection.
Meyer: Yeah, exactly. As I say, there’s a debate about that, but my book is arguing that, whatever you think about biological evolution, the origin of the first life has not been explained by what’s called chemical evolution, and instead, there is a cause that we know that’s sufficient to produce information, and that cause is intelligence.