Evolution

http://ieet.org/index.php/IEET/more/pernar20130807
http://www.darwins-theory-of-evolution.com/

I wanted to look at the human evolution as well as just looking at hybrids, as if you think about it we evolved from monkeys, and therefor still inhabit some of there features as well evolving into man as we know it. We can see in this chart the development and change we have undergone, this being partly due to having to change to be able to survive in the habitat we live in, but also to improve as humans.
In the middle phases of change you can see the resemblance of both human and monkeys, almost playing on the idea of a human hybrid.  
Darwin was first to come up with this theory, and the way we changed was due to a number of different reasons. Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simplistic ancestors naturally over time. In a nutshell, as random genetic mutations occur within an organism's genetic code, the beneficial mutations are preserved because they aid survival -- a process known as "natural selection." These beneficial mutations are passed on to the next generation. Over time, beneficial mutations accumulate and the result is an entirely different organism (not just a variation of the original, but an entirely different creature)