THE ORIGIN OF SPECIES

Genetics definition: why you look like your father and if you don't why you should.

And on the subject of the great man who had the sense to take the healing waters
here a bouts

One day the zoo-keeper noticed that the orang-utan was reading two books - the Bible and Darwin's The Origin of Species. In surprise he asked the ape, "Why are you reading both those books"?
"Well," said the orangutang, "I just wanted to know if I was my brother's keeper or my keeper's brother."