An example of gene flow is a bird from one population ending up and reproducing in another population of birds.
He said gene flow is not a big issue for English Nature as they don't use any herbicides.
Evidence for GM oilseed rape suggests that gene flow to wild relatives is very rare and that hybrids do not establish in the wild.
These are basic questions in considering gene flow from GM to conventional cultivars.
homogenizeels of gene flow will tend to have a genetic homogenizing effect, whilst restricted flow will increase the likelihood of genetic structuring.
For example, gene flow might be avoided by making GM crops sterile, but ' terminator ' technology has gained an ethical stigma.