Epigenetics , the study of changes in genetic expression in response to environmental factors which do not alter the underlying DNA , is also believed to play a role in determining suicide risk .
Epigenetics , the study of changes in genetic expression in response to environmental factors which do not alter the underlying DNA , may also play a role in determining suicide risk .
the name `` suicide '' or `` suicida '' is used before any move that wrestler uses which goes either from the ring , the ring apron , or the turnbuckles to the outside of the ring .