Quote:
Originally Posted by tecoyah
I am of the opinion that physical evolution is only discernable in time frames bordering on the hundreds of thousands of years,
|
If there is a strong selective force pressure on a certain species it seems to happen faster. I've read an article about a snake in australia which changed in the last 70 years (20 generations). It faced the Cane Toad which was bought to australia by humas. the toad is poisonous. so the snakes head became smaller so it only can eat smaller toads (less poison), also it became longer (more "body volume" to dilute the poison). This, small, evolution happend in only 70 years.
http://www.abc.net.au/science/news/e...sh_1250708.htm
But like I said there needs to be a strong selective force, humans are no long under such pressure I think. So such fast evolution seems inpossible for us. But since we are so impatient perhaps we should start our own evolution when we have understossd the mechnanisms and genetics?