In addition, researchers say, they know how this gene works.

The next step is to use this information to figure out how genes work together and not just in isolation.

Not a single gene in human biology works that way.

We say it can't be in the genes because genes don't work that way.

The hard part is learning how genes work in the body and how to fix the ones that are broken.

If this gene doesn't work, the process of fetal differentiation is affected.

He has no idea how the gene could possibly work to influence a man's erotic nature.

This helped him and others study how genes work.

Chemical knock out could address how and where these genes work.

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