When these active genes mutate, we see changes in the body.

Twenty percent of it was marked in blue, representing moving, active genes.

Since active genes generally occur in single copies, this has greatly advanced the usefulness of the technique.

Estimates on the original occurrence of the currently active gene for red hair vary from 20,000 to 100,000 years ago.

They focus their effort on keeping the active genes in proper condition.

But one family is still active, and since its members are often found near active genes they may benefit the genome in some way.

In other cases, it is a gene active in the mother that puts her fetus at risk.

Chimps and humans have 99.6 percent of their active genes in common.

They found that the fatter the person, the more active the gene.

First, a library of beads is made containing all the active genes from both types of cell.