User blog comment:James12708/Possibility of a Mass Effect 4/@comment-5025139-20130104114527/@comment-49.176.97.25-20130107042627

The reason that it would rub off on the children is that throughout time, genetic traits have always been passed down bloodlines. Not necessarily directly Shepards child, but maybe a few generations later or a child that had genetic material drawn from him/her in a different manner. By that point the galaxy could have begun to recover no matter what the end choice was (whether that be via direct reaper intervention or just gathering salvage from the Reaper wars). As a result of this the galaxy would have begun to function again, the krogan would either be filled with rage at being tricked or caught in a civil war begun by krogan that don't want to be peaceful, the Salarians could be meddling again and the Asari would be conflicted about the nature of their manipulation at protheans hands. Doesn't neccesarily have to be Shepards child though.