You should try to define each and every term you use, then you would see how your formulation is problematical.
What does beneficial trait mean?
Clearly you have not stated a general theory of evolution but a hodgepodge of special case evolution involving carnivores, sexually reproducing, and competing organisms. For it to be general you should not mention peculiarities like carnivores, sexual reproduction, and even competition in the fundaments of the theory. Also you seem to be stating the theory of natural selection, and not evolution.
If you start defining terms then you would see that the only escape from the conceptual mess you have created, is to have a general theory of reproduction, and then have mutation as incident to reproduction to explain evolution.
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That would go something like below.
General Theory of Reproduction
A cursory glance at the fossilrecord reveals the fate of organic life in general, all organisms die. Therefore only through continuous reproduction are there any organisms left in the world. The question of interest then becomes, how does an organism reproduce?
The answer from nature can fill many books. There is an incredible diversity of organisms, living in an incredibly diverse environment, and there are many ways and happenstances by which an organism can come to reproduce. To deal with the unicity of Nature in respect to the reproduction of organisms, a clear understanding of the consequences of reproduction in general is needed.
To simplify matters, I will anchor the understanding of the nature of reproduction in the observation of the most simple organism, the DNA molecule. Not only does the DNA molecule function in the development of traits, but it can also reproduce itself independent of any trait. When DNA is put on a feedingdish, without a cell, without a body to carry it, it is still capable to use the resources on the dish to assemble copies of itself. And so are the newly assembled copies of DNA able to make copies of themselves from the resources on the dish. The ability of the copies to also make copies results in the number of DNA molecules to increase faster and faster. The resources on the dish will become scarce leading to competition for resources for reproduction. Some DNA might get tangled up leading to changes in the stucture of the DNA molecule. A small example of descent with modification, or evolution.
- larger domain of possible organic structures, the smaller domain of possible organic structures that reproduce
- scenario's
same structures in same environment
same structures in different environments
different structures in same environment
different structures in different environments
- possible relationships of organisms/traits to it's environment
the relationship contributes to reproduction
the relationship hinders reproduction
the relationship doesn't hinder or contribute reproduction
- sexual reproduction and asexual reproduction
-definition
reproductive unit
environment
selection
chance of reproduction
evolution
mutation
trait
competition
etc. etc. like that....
regards,
Mohammad Nor Syamsu