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It struck me what we should be trying to do was pluck the egg from the ovary and fertilise it in the laboratory. We could do this in animals increasingly... this was the way to go in the human species.

If you wanted to dissect the structure of living cells, genetic analysis was an extremely powerful method, so my interest turned to that.

When I saw the embryo, I suddenly realized there was such a small difference between it and my daughters. I thought, we can't keep destroying embryos for our research. There must be another way.

Therefore, I reasoned that study of the cell cycle responsible for the reproduction of cells was important and might even be illuminating about the nature of life.

I think genetic research is a fascinating and fertile area.

I fell in love with the elegance and precision of genetic analysis and experimentation to answer profound biological questions.

Accuracy in the genetic field will be essential. Errors in testing could be disastrous.

If you want to study one of these strange organisms, you had better have a good justification. It's not good to study gene organisation in some obscure insect that no one's ever heard about.

And of course, identifying all human genes and proteins will have great medical significance.

I was a close observer of the developments in molecular biology.