- Mar 15, 2017
So-called “junk DNA” has fallen on hard times. Once the poster child of evolutionary theory, its status has been increasingly challenged over the past several years. Functions for junk DNA have been cited at other places on this website and in the Journal of Creation. In The Great Dothan Creation Evolution Debate, the opponent’s main argument, to which he returned again and again, rested on junk DNA. The author warned that this was an argument from silence, that ‘form follows function’, and that this was akin to the old vestigial organ argument (and thus is easily falsifiable once functions are found). We did not have to wait long, however, because a new study has brought the notion of junk DNA closer to the dustbin of discarded evolutionary speculations. Faulkner et al. (2009) have put junk DNA on the run by claiming that retrotransposons (supposedly the remains of ancient viruses that inserted themselves into the genomes of humans and other species) are highly functional after all.