I disagree. The amount of DNA you have will affect the rate of mutation. Mutations are mostly a bad thing, however, in an environment where a species must const

I disagree. The amount of DNA you have will affect the rate of mutation. Mutations are mostly a bad thing, however, in an environment where a species must constantly create defenses against parasites or disease, it's important to mutate new defenses. As a result, in a low disease/parasite environment it makes sense to get rid of "junk dna" to reduce the rate of mutation, while in a high disease/parasite environment it makes sense to increase "junk dna" to increase it. Red Queen is a good read on this topic. http://en.wikipedia.org/wiki/Red_Queen_hypothesis http://en.wikipedia.org/wiki/Red_Queen_hypothesis http://www.amazon.com/The-Red-Queen-Evolution-Nature/dp/0060556579 http://www.amazon.com/The-Red-Queen-Evolution-Nature/dp/0060...