10 Weird Genetic Facts
10 Hybrid Vigor We all know the dangers of inbreeding and that it is probably not best to marry a close relative. Charles II, the king of Spain in the late 1600s, was so inbred that instead of the usual eight great-grandparents, he only had four. A glance at his portrait and biography will show that this was not a good idea. But something interesting happens when you breed two inbred individuals from different families together....