Genetic Technology (Precision Breeding) Bill

Debate between Lord Winston and Lord Curry of Kirkharle

Report stage
Wednesday 25th January 2023 Lords Chamber

[Lord Winston (Lab)]

I do not want to argue with the noble Lord about this too much but, actually, I have to say that there is good evidence. For example, with gene editing and the operation called i-GONAD where you can change embryos, most of those animals look perfectly normal and would pass without their gene being changed, but it turns out, of course, that they do not actually fulfil the requirements that you eventually have for the gene. That is one of the problems. That is a serious issue because you change other genes; not as a result of editing them, but by having those other genes edited. That is a big problem.

[Lord Curry of Kirkharle (CB)]

My Lords, I will briefly respond to the noble Lord, Lord Winston, on that point. It is a fair question, which we do need to respond to: what happens if we narrow the gene pool and expose animals to genetic risk? There has been evidence in the past that by narrowing the gene pool in dairy cows, we have had lameness problems; there has been an issue in other species. That is because we have not properly understood; indeed, random breeding, as the noble Lord, Lord Trees, has said, has resulted in that kind of action. Through better understanding of the genes, and through ensuring that we retain as wide a gene pool as possible from which to choose, but being selective and more careful and intelligent about the use of those genes, we should avoid that consequence.