A potential undesirable side effect of somatic gene therapy is that, during gene delivery, foreign DNA reaches the gonadal tissue and inserts into the germ cell genome, with the risk of ...

Both negative selection acting against deleterious mutations and positive selection ... some of the major findings regarding selection in humans, and explain why the conclusions of these studies ...

Impey predicts—assuming that the Martian humans did not interbreed with terrestrial ones—significant biochemical changes in “tens of generations, physical changes in hundreds of generations.” ...

These shifts could turn a deadly pathogen into a harmless bug or supercharge a relatively benign virus, influencing its ability to infect humans and cause dangerous outbreaks. New research shows ...