The result gave scientists their first glimpse into the set of genes necessary for life.

The two are brother and sister, having been created from the same set of genes.

Closely related species should be expected to have very similar sets of genes.

A set of genes are in every living cell.

In each, a mostly different set of genes had been favored by natural selection.

Then there's another set of genes developed for life as a mammal.

"Do very old people have a set of genes that protects them?"

Everyone's special set of genes comes from their parents.

If twins inherit the same set of genes, how can they be so different?