We see only the descendants of successful DNA changes.

Furthermore, to feed people transgenic wheat would introduce DNA changes in humans that no one will be able to predict.

The single DNA change deactivates the gene and, without its contribution, a person has dry earwax.

They found that a particular pattern of DNA changes was much more common among the priests than among laymen.

The DNA changes were increased by treatment with flavonoids in cultured blood stem cells.

The DNA change is not in a gene and makes no known difference to the men who carry it.

None of them showed physical deformities, because the DNA changes were slight, but the long-term effects are not known.

The two types of DNA changes are mutations such as deletions and insertions.

But they do know that DNA changes play a role in many cancers.

Sometime a human is born with a certain kind of DNA change.