One evolutionary expert believes that the human race has stopped evolving. Modern life may have led to the extinction of natural selection. Here are some explanations for why we could be stuck with what we got:
- Technological and medical advances mean it's not just the fittest who get to pass on genes.
- World travel has helped homogenize the gene pool. While small gene pools can evolve quickly, a global pool prevents evolutionary change.
- On average, men have had babies at a younger age recently. The gene copies of younger fathers are less likely to contain mutations.
As you can imagine the end of evolution could bring wide, albeit delayed, consequences. Gorillas and chimps could catch up to us (we'd probably have to let them out of the zoos), and medical science won't get any help from nature in cutting down the number of diseases to combat. Perhaps technology will help humans take stalled evolution into our own hands, by letting us choose the genes we like.