Quote:

On non-coding (junk) DNA. I found a bit of interesting information.

Its comes from the crazies, but it includes references the entire way, so if you don't believe it, you don't have to. Your choice.



Yes, the content of junk DNA is probably not random. Even if junk DNA has no function in a certain species, it could have had once a function in some predecessor species it evolved from. Some sections of junk DNA are corrupted copies of functional coding DNA.

Junk DNA is considered a powerful evidence of evolution because many junk parts are identical in different species. They don't code anything, but they indicate the grade of evolutionary relationship between species.

- BTW, "panspermia" has earned some place in science fiction stories, but is not a part of evolution theory. Just in case you didn't know.