Now you’re giving answers to arguments that people haven’t even made. Of course beneficial mutations are rare – that’s why things evolve very slowly and gradually. No one ever disputed that, and I don’t think anyone ever suggested that natural selection ‘consciously’ selects for those with beneficial mutations. Natural selection simply means that any animals with beneficial mutations are more likely to survive and reproduce. No one here ever claimed anything else.786 said:It doesn't mean that "fit" WILL have a beneficial mutation.
Natural Selection is NOT a CONSIOUS mechansim that picks out animals. I'm surprised you didn't know that.
anyways selection a 'fit' animal doesn't mean beneficial mutation. You think you put someone in shape, inside a nuclear bomb radiation then it is going to be beneficial for him NO!
Mutation is random, meaning CHANCED. It DOESN"T have ANY CERTAINTY. Natural Selection cannot control Mutation. Natural Selectio cannot cause beneficial Mutation. Mutation cannot be controled. It is CHANCED
Here is a brief summary of how evolution works, since you don’t seem to be clear on it:
In every generation there is variation; the individuals are all somewhat different. Because of these variations, some of the individuals are more likely to survive than others. The ones that have traits that increase their likelihood of survival will be more likely to survive and reproduce, so the next generation will have a different distribution of traits than the previous generation – it will be more like the fittest members of the previous generation, and less like the least fit members of the previous generation (which died or were not able to reproduce because they weren’t very fit). Because of that, the genetic (and therefore physical) characteristics of the organism will change gradually from one generation to the next.
If you accept that
1) There is variation between individuals in each generation
2) Because of those differences some individuals are more likely to survive and reproduce than others
3) The traits (genes) of the offspring will be influenced by the traits (genes) of the parents
then evolution seems inevitable.