The DNA signature is unique for every species, plus every creature has a DNA pattern which is unique for it. More importantly, that DNA pattern has to be in a specific sequence for each species. And this DNA sequence cannot, and does not, rearrange itself to create some thing new. DNA does not have the inde pendent capacity to add nucleotides at will. Once a given program is established, it remains fixed in its basic sequence.
Evolution is unpredictable and arbitrary, while science is systematic-based on a preexisting system.
And in a broader sense, it does not seem the universe could have created itself arbitrarily and still be completely, totally, and in every regard, systematic. Evolution faces additional problems be sides not fitting into the standard definition of science. Despite the extensive re search in this field, it has to be acknowledged that some 130 years after the theory was proposed, there are still more questions than answers. And a sperm meets an egg, we get another creature, almost as easily as using the Xerox. In fact, this was one of the first questions raised about evolution theory.