Summations Only

Other niches are already filled with species adapted to them.For the dogs to move they would have to out-compete other species in areas that those other species are already well-adapted to, and adapt to those other environments at the same time.Not as easy as it looks.But this is off topic. You need to address some of the criticisms of your posts. If I may mix metaphors, you're trailing about 99-0 in the 4th quarter and sinking fast.

Subbie = It's quite clear you have no idea what you are talking about.First, we've told you countless times, organisms don't evolve, populations do. This is not simply a matter of semantics. This is basic. If you don't understand this fact, and I believe you do not, you will never understand anything.Second, yes, sometimes a population can move in response to environmental changes. But sometimes the population evolves. If you believe this is not so, you need to explain why.

BY JEFFERINPOOLISConsider this scenario:
A species, we’ll call it a bugblatter beast, is adapted to live in the forest similar to the forests found in southern Canada and the Northern US. This forest is quite extensive and the bugblatter beast’s range extends through the whole forest.Let’s say that the bugblatter is living during an ice age and as the ice retreats and sea levels rise this forest is cut in half by a new sea. You now have two different populations of bugblatter beasts that cannot interact with each other. On the west side of the sea you have the western bugblatter and on the eastern side you have the eastern bugblatter.The prevailing winds in this area blow from west to east. As the wind blows over the water it picks up moisture and when it crosses over the land on the eastern side it drops this water in the form of rain. This makes the eastern forest far wetter than it was before the division. It has become a rain forest. The western environment has changed very little.In the eastern, now, rain forest many of the plants that thrived there before either die off or change� to survive in this new environment. Due to this change in environment the bugblatter beast’s favorite game virtually disappears. It fails to adapt to the changes. However in the new environment game is plentiful but the bugblatter needs to change� to be successful and eventually it does. Lets say that in the rain forest the bugblatter beasts large size makes it difficult to get through the underbrush and smaller thinner ones tend to be more successful. Slowly the eastern species, because smaller ones breed more often, gets smaller and thinner.In the western forest the bugblatter lives its life the same way it ever did and very little change happens.Do you agree that this scenario is possible under your definition of change or adaptation�? If so, do we now have two separate species of bugblatter beast? If not, why? Why can’t a species change in the manner I described?

Grate now if 2 doggies are borne one has a "bad" mutation that makes him slow lazy and a bad hunter, the other has a good mutation making him faster stronger and a better hunter witch of these doggies will find a female and have children. Some of the children inherit this mutation.This is natural selection.

Actually the possibility of evolution is grater a smaller gene pool has a better chance of excepting a trait as dominant if they are lucky that trait "good" if not its "bad" and they will likely go extinct. A relatively recent bottle neck in lions made their sperm all fucked up 3 headed sperm cells or 3 tailed ones ... normally this change would be filtered out by natural selection because it gives lions a worse chance of breeding successfully but since the gene pool was small the change stuck