Quote Originally Posted by Philipvs Vallindervs Calicvla View Post

None of this has actually been proven. I don't dissagree in principle but there is no proof. All we have seen are changes within species, and most of those involve breeding for already existing recessive traits. I don't know of a single instnace where we have evidence of, for example, a fly growing a sting like a bee.
At the same time, there's evidence of mutations in bacteria and viruses were they start to resist the previous treatments that we have. And then there's the fossil record too which gives evidence.