The following report indicates that humans have only 20,000 genes, and that 1 gene in 200 can be made inactive and it doesn't matter. I suspect that this finding is consistent with my prediction that RNA will continuously be found to be more and more important as research delves further in to what was 'junk' DNA. Further indication of more complexity than we ever imagined in our genetic makeup. http://www.sciencedaily.com/releases/2009/02/090205133740.htm