|
Well, there is a certain range of biodiversity built into each species genetic code.When certain traits are more profitable, the population with those dominant traits will survive and increase in population.When these traits become less desireable, those in the population who do not have these traits will thrive instead.Think of it in terms of the influenza outbreak of 1918-the most deadly pandemic in recorded history.It did not stop until all of the people who were genetically susceptible were killed off by it.Those who were not susceptible survived.This does not mean the genetic predisposition was eradicated from the human race, it remained as a recessive trait in some of the survivors.Therefore, it is still a part of our bio-diversity, and not an evolutionary step.
__________________
1998 Nissan Frontier XE/2wd/5spd 1 owner, 264k miles
1985 Olds Cutlass, 350 Chevy, owned for 14 years
WANTED: 1968-1973 Datsun 510 or 1991-1994 Sentra SE-R
http://www.myspace.com/junkyardengineer
Last edited by himilefrontier : Aug 27th, 2003 at 11:01 PM.
|