Tuesday, March 23, 2010
Modern evolution in humans
On page 218, Jerry Coyne asks the question "Are we still evolving?". Many types of natural selection are no longer existent because of modern nutrition, sanitation, and medical care. Are humans moving past natural selection with the use of technology? Are humans actually getting smarter and stronger or are we on a continuous path? Also, Coyne discusses how many genes have come full circle, genes that once were helpful to us are now hurting us in our modern world. So could this possibly mean that humans are backtracking, or "de-evolving" (219)?