Something I read promoting intelligent design states that science is disproving the connection between chimps and people. Now I read a science article on the matter and it states that the base pairs compare and there is about 1 or 2 % difference, but of the actual genes they are as much as 80% or so different. But from the way it sounds only one amino acid in a large protien has to change for it to be considered an entirely different gene. So the design argument didn't impress me much, but I do remember hearing for a long time that chimps' and people's genes were 98% the same. The other thing I heard once was that the genes of a person and another mammal (I can't remember which one, I think it was a mouse) are 90% the same. I've also read that most of the genes present in a person are present in flies also. Then recently I read that people have less then twice as many genes as a fruit fly. I guess what I'm wonder then is how different are human genes from an organism on a very different evolutionary branch like a fly when compared to human and chimp? For instance, they did a gene by gene comprison on a chromosome of a chimp and a person. Is this even conceivable between a human and a fly or is the chromosome layout radically different?