Report: Not all evolution has purpose

Repetitive DNA sequences that make up more than 40 percent of our genome rose to prominence without offering any benefits to the human race, researchers atJohns Hopkins University reported.

“For a long time, the basic belief of evolution was that all random genetic changes that manage to stick around have some selective advantage,” Nicholas Katsanis, associate professor at Johns Hopkins? Institute of Genetic Medicine said in a statement. “But our work adds to the case that frequently, we are what we are largely due to random changes that are completely neutral.”