Below are some <snipped> excerpts that may be of interest. Taken from: http://www.the-scientist.com/yr2003/may/research3_030519.html
The Dark Side of the Genome
Researchers shine their lights on noncoding sequence | By Brendan A. Maher<snip> --- The human genome, the now essentially decoded 1 map of life, likewise has a light side--the genes encoding mRNA and protein--and a dark side, which is coming into view for the first time. The dark side encompasses more than its opposite: The majority of the genome comprises intronic regions, stretches of repeat sequence, and other assorted gibberish that has attained the ignoble dubbing, "junk." <snip> --- "The experimental work that we've done in the laboratory ... indicates that these low-level transcripts are really valid," she says. Referring to the genome's nonprotein-coding elements as "our own dark matter," she asks: "Is there a whole world within the nucleus about which we're fairly ignorant?" I think this comparison of "junk" DNA with "dark matter" might be a useful comparison in certain creation/evolution discussions --- legitimately pointing out the "ignorance" of science concerning the basis upon which many current (evolutionary) explanations are founded.