Only a minority of conservatives believe in creationism and most of the believers belong to the Christian right. Conservativism is a political philosophy, not a religious belief.
How can then evolution be the fall of mankind, Evolution doesn't exist in the Bible.
The Bible is not an exhaustive description of reality. Many things are not in the Bible. The Theory of Relativity is not mentioned in the Bible, either. Does that mean you don't accept that theory?
You say we were homo sapiens. I thought we were created when god drew the image of man in the dust and made it come to life, then created a women from his rib
Most Christians around the world (including Catholics, the largest Christian denomination) accept that evolution is perfectly compatible with the Genesis creation story. It comes down to the question of whether you believe that Genesis is a parable about creation told in a manner that primitive people can understand or whether it is literally true.