You can download the hand-out of the scottish symposium, if you click here . The chinese handout is available here . The seminar is over, but you may be interested in the presentations themselves. One of the Frequently Asked Questions is where I am from. That's actually a very interesting question indeed, but unfortunately it's impossible for me to give a clear and immediate answer.
Every child conceived by a given couple is the result of a genetic lottery.
He is merely one out of a large crowd of possible children, any one of whom might have been conceived on the same occasion if another of the millions of sperm cells emitted by the father had happened to fertilize the egg cell of the mother - an egg cell which is itself one among many.