Researchers have recently sequenced the genome of a primate species called bonobos, and have found they share 98.7% the same DNA as humans. http://www.sciencemag.org/news/2012/06/bonobos-join-chimps-closest-human-relatives It seems like some of those small differences can end up leading to very significant effects. Again, those who tell us "all humans share the same DNA" is a bunch of hogwash.
There is absolutely no difference between humans and Bonobos - except Bonobos have higher ethical standards.
The ability to create fertile offspring does not necessarily mean two different plants/animals are of the same species. This is a plate with kumquats and grapefruit: They can both be interbred and hybridize. Hybridization between different species can oftentimes lead to some interesting reproductive problems further down the line. In the case of crossing a domestic pet cat and an African serval cat, the hybrid male cats are sterile and unable to reproduce, though the females can reproduce. https://en.wikipedia.org/wiki/Savannah_cat In fact the famed plant breeder Luther Burbank actually made a successful cross between raspberry and strawberry, two fruits that are very different from each other, though the resulting hybrid had very stunted growth and did not produce edible fruits. http://the-biologist-is-in.blogspot.com/2015/01/hybrid-sterility-and-speciation.html
you fail to understand genetics. The difference between humans and the apes that perceive as small is in fact enormous. There some 3 billion bits of data in our approximately 20,000 genes , and the real kicker that you're clearly unaware of, apes have one extra pair of chromosomes 24 to our 23. We are related to apes but vastly different. Humans do in fact all share the same DNA, we are all related, we are all one big extended family, all 7.5 billion of us.
This is interesting, hybridization between two species: Scientists discover hybrid swarm in global mega-pest
