DNA left overs, new mechanism for evolution Friday, 16-Jul-2004, by News-Medical A team of researchers from the Universitat Autònoma de Barcelona (UAB) has discovered that transposons, small DNA sequences that travel through the genomes, can silence the genes adjacent to them by inducing a molecule called antisense RNA. This is a new mechanism for evolution that has been unknown until now. Transposons are repeated DNA sequences that move through the genomes. For a long time they have been considered as a useless part of genetic material, DNA left overs. However, it is more and more clear that transposons...