genetic sexual attraction

(Newser) - A new study suggests that when it comes to dating, women tend to pick partners who bear at least a slight resemblance to their own brothers. Reporting in the journal Evolution and Human Behavior , the researchers write that selecting "optimal" breeding mates—not too closely related, but not too...

(Newser) - A New Mexico courtroom will be the scene of a trial sure to make many uncomfortable next month: A 36-year-old mother and her 19-year-old son have been charged with incest and face three years in jail, reports the Clovis News Journal . But Monica Mares and Caleb Peterson are anything but...

(Newser) - It may seem strange that Aimee Sword would want to sleep with her biological son, but that kind of taboo attraction may not be as rare as we think, writes Tracy Clark-Flory of Salon . Close biological relatives who meet as adults have been known to experience such attraction—author Barbara...