We're talking about the genetic alteration of an entire population.

To learn which kind of genetic alteration would most make them harmless?

Breeding and genetic alteration could tell you so much about a species.

The only danger to him was that *they* were concerned about the issue of his possible genetic alteration.

The state of a cell may be changed epigenetically, in addition to genetic alterations.

But in 15 tumors, or 17 percent of the group, "we observed these unique genetic alterations," he said.

Different promoter genes are required for each type of genetic alteration.

No specific genetic alterations for this tumor are known.

They began their genetic alterations on humans and animals.

To produce the genetic alteration of an organism, place it in an environment which is dangerous but not lethal.