According to Richard Dawkins I share 50% of my genes with siblings. According to my Biological Anthro professor, I share 1/4th of my genes with the daffodil. According to Richard Wrangham and Dawkins, I share 98% of my genes with chimpanzees. Now I share 4% with Neanderthals? How can all of these figures be correct without contradicting one another? I've always wanted someone to explain this to me...preferrably a Geneticist...