Retroviral Gene Fragments Can Destabilize Embryonic Cells

Unexpected effects on embryonic development are caused by ancient, dormant sequences in the genome. This is because retroviral sequences that are mostly “harmless” yet undead are present in the mammalian genome. Recently, some of these retroviral gene fragments’ potential effects on embryonic cells were discovered by an international research team. Unexpectedly, an imbalance in the…