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3. that the duplicate gene gets spread through the species at chances of 50% survival at each generation (note no selective advantage since the gene is just a duplicate at this point). -me-

It bears repeating - sometimes enhanced levels of a gene product can enhance survival. Remember the bacteria in xylose. At that point you are cleared for takeoff.

There may be a few cases where two exact same genes are beneficial, but I doubt it happens very often. First of all, you must realize that a gene is not 'on' all the time. So leaving it on a little longer can do the job just as well almost all the time rather than having two identical genes (see the article I quoted from regarding chimps and humans on gene expression a few posts back). So this is not usual and cannot be helpful in the vast majority of cases. Again, we must refer also to #6 in post# 1605. A gene to work has to get linked to the rest of the organism. This is a big problem, perhaps the biggest problem for evolutionists and a problem which those 'fools' who preceded Darwin were well aware of but did not have the means of proving. Now the proof has been found.

There may be a few cases where two exact same genes are beneficial, but I doubt it happens very often.

Why? More clotting factors, more growth factors, more immunogenic factors are three examples I can think of off the top of my head which at some point were shown to have beneficial additive effects certain contexts.

First of all, you must realize that a gene is not 'on' all the time.

Many genes become constiuitively expressed once a stage in development has been reached. Besides, so what if the gene is not "on" all of the time anyway? If at the appropriate time, more of the gene product means a better chance for survival for the organism, who cares? Your rules are very arbitrary.

So leaving it on a little longer can do the job just as well almost all the time rather than having two identical genes

This is probably a bit trickier to produce than simply duplicating the sucker.

A gene to work has to get linked to the rest of the organism.

A duplicated gene will have all of the promoter elements necessary for its expression.

This is a big problem, perhaps the biggest problem for evolutionists and a problem which those 'fools' who preceded Darwin were well aware of but did not have the means of proving. Now the proof has been found.