MUTATION

[noun] [U]Mutation is the way in which genes change and produce permanent differences.It is well-known that radiation can cause mutation.A mutation is a permanent change in an organism, or the changed organism itself.Environmental pressures encourage genes with certain mutations to persist and others to die out. Some people with red-cell mutations such as thalassaemia and sickle cell anaemia inherit an immunity to malaria.As for the pink form of the plant, the original mutation was found in England and its cuttings have spread across the world.