In rare and heartbreaking cases, errors can leave parents raising children who are not biologically theirs - or discovering decades later that their family's genetic story isn't what they believed.

THE secret son of late Bee Gees star Maurice Gibb has refuted singer Lulu’s claims that he was conceived during the time she was married to him. Sixties icon Lulu told Louis Theroux on his ...

Claims that genes determine intelligence, health and social outcomes are reappearing. But modern science shows environment ...