According to epigenetic theory, environmental factors may lead to chemical processes in the body that "tag" certain genes for either activation or suppression but do not change the genetic code or dna sequence itself. these "tags" may

Epigenetic theory  states that the tissues and the form of an organism arise in an organized and sequential manner from the undifferentiated cells of the fertilized egg.

Many environmental factors tag the certain genes in the fertilized egg that may either suppress or activate them. These tags may certainly impact the genetic inheritance being passed to the offspring.

Hence, the given blank can be filled with' impact the genetic inheritance being passed to the offspring'.