Tell me more about what you mean by that. FRANCIS COLLINS: Well, growing up, I was vaguely aware of things that went on in church, because I was in the boys' choir at the local Episcopal church.

I'm Dr. John Whyte, Chief Medical Officer at WebMD. Today, I have a very special guest-- Dr. Francis Collins, the Director of the National Institutes of Health, the only director, by the way that ...

Collins: That sounds apocryphal to me, but it's a great story. Krulwich: Is that the sort of thing? That is, depending upon how you read the genes you can get different end products? Collins ...