first; we can find the same in nature. for instance:
Deletion of ultraconserved elements yields viable mice. - PubMed - NCBI
"Ultraconserved elements have been suggested to retain extended perfect sequence identity between the human, mouse, and rat genomes due to essential functional properties. Remarkably, all four resulting lines of mice lacking these ultraconserved elements were viable and fertile, and failed to reveal any critical abnormalities when assayed for a variety of phenotypes including growth, longevity, pathology, and metabolism. These results, while not inclusive of all the possible phenotypic impact of the deleted sequences, indicate that extreme sequence constraint does not necessarily reflect crucial functions required for viability."
so even evolution theory doesnt necessarily predict what you said.
There are always going to be exceptions especially when dealing with as simplified as genetic conservation coupled with the complexity of biology.
If you read the paper in question, they have a number of hypotheses as to why this particular scenario was the case; hypotheses which can be further tested.
secondy: its very likely that if a gene is conserve among several spcies, it has an important rule even under the design model.
But what is your basis for this assumption? This is what I keep trying to get at, but so far you haven't given an answer.
Under biological evolution, conserved genetic sequences would be a result of natural selection preserving those particular sequences. And natural selection preserving those sequences implies they have functional importance (relative to non-conserved regions).
Under the design model you propose, similar genetic sequences are entirely up to the purview of the designer. So you need to provide a reason why a similar sequence would be considered 'important' sequences.
Since you love analogies with artificially designed objects here's one:
Consider cars. If you look at vehicles built by a particular manufacturer, you will find a noticeable similarity among them: namely the manufacturer logo.
This is a functionally unimportant design feature among vehicles. You could easily remove the logos from any given car and it will still work perfectly well. Yet, it's an example of a highly conserved design element.
It's a perfect example of how similarity and functional important do not necessarily go hand-in-hand when it comes to artificial design.
otherwise why the other genes arent so conserve?
That's what I'm asking. Why would the designer do what they did?
The other thing to consider is that genetic conservation is
relative to overall species divergence. If we have two species that are separated by 200 million years of evolutionary change, they could have conserved genomic regions that are more diverged than two species separated by only a couple million years.
This is what the aforementioned paper was addressing by the incorporation of phylogenetic trees into the analysis.
Under your "design" model, you don't have that as a basis. All you have are again, a bunch of independent genomes with varying relative similarity. So how do you address analyzing genomes with high degree of similarity? Does high degree of similarity imply genome-wide 'conservation'?
so the logical conclusion is that this gene has an important rule put by the designer.
But you still have no basis for this conclusion. Your entire assumption is that genetic similarities are important, but you haven't given a logical reason why this would be the case if genomes were independently designed.
Look, we had this conversation previously and you went in circles for weeks and couldn't come up with anything. Given that you're not providing anything new this second time 'round, I'm not expecting this to go anywhere.
So unless you come up with a proper reason why conserved genomic regions would be functionally important if genomes were independently designed, then I consider this discussion closed.