Genetic sexual attraction is a hypothesis that attraction may be a product of genetic similarities.[1]: 200 While there is scientific evidence for the position,[1]: 200 some commentators regard the hypothesis as pseudoscience.[2] The term is also used for a phenomenon in which biologically related persons separated at a young age develop intense feelings—including sexual attraction—upon the restoration of contact.[3][4][5][6]
You're 40, happily married - and then you meet your long-lost brother and fall passionately in love. ... Alix Kirsta talks to those who have suffered the torment of 'genetic sexual attraction'