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Natural selection
 
Johnny Vegas Views: 2,584
Published: 20 y
 
This is a reply to # 270,104

Natural selection


I also found that exact same site!!

Its a pretty good site isn't it?

So if a bacteria adapts and becomes the fittest for survival under some certain conditions, and its offspring carry those traits that allowed its parents to survive, ISN'T THAT EVOLUTION?

Actually no. That is just plain biology/genetics - whatever you want to call it. Darwinian Evolution works by the specific mechanism of mutation. If mutation can not add significant amounts of information (e.g. enough to make a human being) then Darwinian Evolution does not occur.

Maybe you want it to be a definate Darwinistic evolution, but i don't. I do not defend Darwin to the tee, I just say evolution occurs, and is occuring right now somewhere.

But what do you mean by evolution? Evolution literally means change. If you are saying that biological life changes and adapts then everyone believes in that. If you are saying that all of life came from a common source, from non-life, from the random meetings of molecules, and that speicies can change into one another and that people decended from monkeys then there is no evidence for that.

" Natural Selection
As you saw in the previous section, mutations are a random and constant process. As mutations occur, natural selection decides which mutations will live on and which ones will die out. If the mutation is harmful, the mutated organism has a much decreased chance of surviving and reproducing. If the mutation is beneficial, the mutated organism survives to reproduce, and the mutation gets passed on to its offspring. In this way, natural selection guides the evolutionary process to incorporate only the good mutations into the species, and expunge the bad mutations."


Ok the problem with this quote is that 99.999999% of an organisms genetic make-up consists of non-mutated existing inherited genes. So natural selection does operate (to some extent) but it operates on the level not of new mutated genes, but existing genes. So basically natural selection selects between different gene-sets. This is the same process that occurs when sperm compete against one another to fertilize an egg. A person has two sets of genes - one from each parent. For each gene a choice must be made beween which copy to put into the sperm cell. Each of the millions of sperm represent a uniqe (random choice). Now natural selection (if thats what you want to call it) ensures that these gene-set choices compete against one another so that the best one is chosen to fertilize the egg. This is biology. This is genetics. This is natural selection. But there is no mutation going on - hence nothing Darwinian.


"Add the dimension of time, and over the generations natural selection will act to change the complexion of each evolving lineage"

Ever heard of the phrase random walk? If you take a random step, and then another, then another, you end up with a random walk. An example (from chemistry) would be Brownian motion. The additions of mutations constitute a random walk through biological space. As such they can not lead to complexity.

Natural selection selects those genetic mutations that make the organism most suited to its environment and therefore more likely to survive and reproduce. In this way, animals of the same species who end up in different environments can evolve in completely.

Actually no it doesn't. As I said before the vast majority of an organisms DNA represents existing genetic information (combined in a new way). So natural selection does not select on the basis of mutations (other than by eliminating catastrophic mutations). It selects on the basis of new combinations of existing genetic information. So that begs the question where did all this genetic information come from in the first place.

The rest of the quotes (about whales and such) are pure speculative nonsense, with not a shred of supportive evidence. That is my objection to Darwinian Evolution. Not that it contradicts any theory of God - because it doesn't. But that there is not a shred of evidence for it.

JV.
 

 
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