Mutations happen because the genetic code for that feature already existed in the first place - it just wasn't activated. Example: there's a
tropical bird that "can" grow teeth and horns or something, I forget exactly.
forgive me, but I don't think that explains mutation via radiation, in the sense that mutations can also be caused by breaking down what is there..
essentially removing parts from what already exists to form something new. Once that link in the chain is removed you have something new correct,
hence ppl with no arms / legs etc... its not that its been switched, but actually removed from their DNA.
I may also be wrong, but every 'thing' on this earth does not have the same DNA does it? - when you take into account which genes are turned off or
on. I do not recall hearing that a flower has exactly the same number of genes in its DNA sequence as me, just that it has some swicthed off whereas I
have them switched on. If they do then I'm obviously wrong, but I didn;t think they did. Your argument implies that I share the same number of gene
sequences as a flower but without some genes turned on.
I know were fairly close to a fruit fly and a mouse, but I don't think we are that similar with all things on this earth. If we are not all similar
then where are the originators of the different gene sequences. I am open to evolution, but I think that maybe things could have evolved by taking
things away as well as things being flipped on or off. Heck, maybe aliens are able to 'add' to the sequence for self improvement.
How about a situation whereby a gene may flip on and in doing so causes another new gene type to be formed thus adding to that sequence. Anyways, just
a few thoughts running through my head.
[Edited on 11-3-2003 by phait]