Is atheism a scientific perspective?

[Tonus]

When I say degrading genetic code, I mean mutations slowly accumulating to the point where the sequences no longer produce fuctionality. In other words, an enzyme may no longer work if there is a certain mutation. If the enzyme is responsible for an immune response, then losing this enzyme would prevent the organism from being healthy. The virus removes the individuals who have suffered a mutation that cripples the immune enzyme. In this way, only the individuals with the less degraded (mutated) code will survive. It would preserve the more original code.

Mutations can be positive or negative or neutral (in that they don't have an immediate impact and may never have one at all). Some mutations that are bad can also aid in survival, such as the sickle cell disease in African people which is believed to have helped them survive against the onslaught of malaria. Other mutations may provide a benefit in one environment (say, a forest) and wind up being detrimental if the environment changes enough over time (to a grassland or desert). DNA seems to change in every individual over time and is different with each new individual, so I don't think it preserves points in time very well for a population. The fact that so many species have gone extinct indicates that neither the original code nor the mutated variations guarantee more than temporary success with very few exceptions (sharks and crocodiles come to mind).