In their famous debate over Darwin's findings about evolutionary biology, Bishop Wilberforce asked T.H. Huxley whether "It was it through his grandfather or his grandmother that he claimed his descent from a monkey?"
Recent genetic research suggests that this was a pretty good question after all. Apparently the ancestors of humans and chimps may have engaged in a little hanky-panky several million years ago. The hybrid offspring of this primate love match eventually evolved into modern homo sapiens.
Thought experiment: Crossbreeding between modern chimps and people would not likely produce (assuming it worked at all) fertile offspring because we now have 23 chromosome pairs and chimps have 24. I want to be very clear that I am not recommending that anyone try this experiment.
In response to Wilberforce's witticism, Huxley austerely replied "he was not ashamed to have a monkey for his ancestor; but he would be ashamed to be connected with a man who used great gifts to obscure the truth." Still sounds good to me.