Er...I'm confused here....what exactly are you arguing about? You admit that allelic frequencies change over time (microevolution), and you apparently admit that new species can be formed as a result of these changes (macroevolution). What's the problem here? If these phenomena (really phenomenon since they are one and the same) are real then "survival of the fittest" is simply a logical extension of them.And did it result in the dominance of one species over the other? Species interbreed all the time with the inability to breed further and that does not support your evolution and survival of the fittest hypothesis.