I'm replying to Faith's post, but this is for all in general.
We have a number of "Junk DNA" topics. I'm glad to see an interest and willingness to discuss it. But it's best to do it in another topic.
"Junk DNA" a useful term or not? looks to me like the current "open thread" for discussing Junk DNA. Let's move the discussion there. Faith, I'd really appreciate if you could copy your post there (just copy / paste the "peek" version of your post here, and post it there). You can link your current post to your new one... but I can do that for you if necessary.
As I said, I'm glad to see this investigation go on. Let's do it somewhere where others can benefit from it in the future.