On the other hand, it can be noted that natural selection as a driving mechanism for evolution is totally inadequate. Natural selection (along with mutation) is said to have caused organisms to evolve from one basic kind (animals which can reproduce with one another) into another basic kind. This is prohibited genetically since all of the information for the development of an organism has already been encoded in the DNA of its parent. Variation to organisms must remain within its basic kind. For example, genetically, a wide variety of dogs can come to exist, but a dog can never become anything other than a dog. It remains in its kind. It does not have the genetic ability to become anything more.
Admitting this, evolutionists have tried to explain that natural selection happened in conjunction with mutations to the genetic code. This could not produce evolution, however, since mutations do not create new genetic potential, they just alter what is already there.
Furthermore, mutations are small, random, and harmful alterations to the genetic code. This also makes evolution from mutations impossible. For example, a working wristwatch does not improve but is harmed when its inside parts are randomly altered.
Natural selection also contradicts the second law of thermodynamics which states that, left to themselves, all things tend to deteriorate rather than develop, while evolution wants to go in the opposite direction. "Survival of the fittest" demonstrates only how an organism has survived, not how it has evolved.
http://emporium.turnpike.net/C/cs/evid2.htm