Something a Creationist sent me about evolution. Not sure what he's getting at?
Species is define as "(biology) taxonomic group whose members can interbreed ", meaning members of different species cannot breed and produce viable offspring who can also reproduce (think horse + donkey = mule but a mule is sterile, so it is not a species) there has to be a difference major enough for the species to not be able to cross-breed. According to the theory of evolution, the way a new species comes about is by beneficial mutation, correct? This mutation is random, but since it is beneficial the individual survives better than the others, and reproduces. Eventually, the mutation becomes genetically prominent enough to be a dominant gene in the species gene pool, correct? This has never happened with any current species and the continuing experiment with fruit flies proves that it can't happen, because each time a mutation happens, it is not beneficial, and the offspring is usually sterile, eliminating the useless gene from the gene pool. Only minor variations have been observed and do not produce a new species because they are still able to mate with the original fruit fly specie, and create viable offspring. Darwin didn't know what happens inside cells to make them split, or he might have reconsidered his theory. The process is extremely complicated and scientists have still not figured out how it happens, all we know is data is stored in a quaternary double helix, we don't know how it can contain enough data to map out an entire organism. Until we know exactly how DNA works, I don't see the reason of thinking we know how individual species came about.
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