Happyflowerlady
Vagabond Flowerchild
- Location
- Northern Alabama
The evidence supporting evolution is over-whelming. Take one small example: the modern horse descended from a tiny creature about the size of a small dog. We have the fossilized bones of every stage between "Eohippus" and the modern horse, which we are all so familiar with. There are thousands of such examples.
The mechanics of evolution revolve around an animals abilities, or lack thereof, to survive in it's environment. Any animal that can not locate food and reproduce, goes extinct. Mutations occur quite randomly. Most of those mutations work against its survival. Periodically, however, a randomly occurring mutation helps the creature survive, and reproduce, and gives it an advantage over others of its species. Thus it lives longer and produces more offspring which also have the same mutations as one of its parents.
It should be noted that evolution has absolutely NOTHING to do with what the animal wants. Take the giraffe for example. It did NOT gain a long neck because it wanted to. Tens of millions of years ago, one single animal, was born with the genes to have a slightly longer neck. This allowed it to "out compete" with others of its kind, and thus it could reach higher and get more vegetation than others of its kind. Those genes were passed on to its offspring.
Simple common sense tells us that an eagle with better eye sight has a huge advantage in the quest for food. If that eagle happens to be male, he has a greater chance of being selected by the female as a mate. In other words, he is a better provider. Thus the chicks have those better genes and they are fed more food by the parent and they survive.
That is what evolution is all about. Random mutations give an animal a better chance of surviving and producing more offspring.
Quite simple really.
What you are talking about is more of a micro-evolution, which is quite possible, and is actually being done all of the time. That is why we have dogs that look like St. Bernard’s look, and other dogs that are chihuahuas.
Some of this kind of breed evolution happened naturally, depending on where the animal lived and what they needed to survive, and most of it now is done by selective breeding.
What does not happen is evolution turning one creature into a different creature. Ferns do not turn into palm trees, dogs do not turn into cats.
You can follow the evolution of any particular species, but it still stays within that same species.
