You have already been informed that Popper accepts evolution as being valid science.
Not according to his own definition it isn't.
Thomas Kuhns famous book on scientific revolutions showed that real scientists dont work the way Popper said. In reality, scientists can tolerate many anomalies in the ruling paradigm, and it takes a lot for this to be overthrown and replaced with a new paradigm. And Imre Lakatos pointed out on a logical level that theories dont stand on their own, but are protected by auxiliary hypotheses. The falsification can be applied to one or more of these, while leaving the core theory intact. See this logical discussion on verification and falsification.
http://www.answersingenesis.org/Home/Area/feedback/2003/0207.asp