It's a well-known fact that humans no longer have as much pressure on them by natural selection. After all, we can even let blind people survive , have children, and pass their blindness on- right?
Actually, a new study has recently shown that natural selection is still with us. The difference, of course, is that sapient life requires selection for different things. A recent study showed that humans (or at least women) are getting shorter, heavier, less likely to have a heart attack and lower blood pressure. They also will enter puberty earlier and menopause later. This is pretty much what our lifestyle is selecting for, so nothing unexpected. It does, however, oppose the idea that sexual selection may play a bigger role now.
-Brown Rhino
No comments:
Post a Comment