"We will look for evolutionary events that lead to the development of new genes."

Some of these new genes also proved to be undesirable.

All the biotechnology in the world can't create a new gene.

Within two years, he had found eight new genes.

I think we would have to build into the new gene a way for it to destroy itself when its work is done.

She noted, however, that other research teams have had trouble getting cells to take up new genes.

"How can you imagine one sample having a million new genes and proteins that we don't know anything about?"

Finally, the technology is being used to give plants new genes that will protect them from plant diseases.

"How do new genes find their way into the pool?"

What if the new genes worked too well, and could not be turned off?