Board Thread:Speculation House/@comment-24.247.91.107-20140511154823/@comment-4010415-20140819132726

76.14.223.119 wrote: Then perhaps the mom is a chimera? I'm not sure chimerism would cause her children to be considered half-sisters, though. "Half-sister" is a term given when two sisters share one parent but not the other, like they were both conceived by the same father but birthed from different mothers. I'm sure with the people in real life who have chimerism (few as they may be), people wouldn't consider their children to be half-siblings if they had both of them with the same partner.