New Siblings, Old Secrets

Over a matter of weeks, genetic testing by Meyer, Tofte and others exposed the decades-old secrets of at least four families — creating new links, answering questions that had long been festering, and in some cases shattering bonds of trust between children and parents. (Photos By Leah Nash / Special To The Chronicle; Jessica Christian / The Chronicle; Jovelle Tamayo / Special To The Chronicle | San Francisco Chronicle)

Her dad, it turns out, had never told his family he was a sperm donor, but he seems almost certainly to be the biological father of at least three people who were conceived at a private fertility clinic in Palo Alto near Stanford. Old family photos of Karen Meyer, who found out in early March through a Facebook message that her father, a doctor, was a sperm donor and fathered at least three other children through artificial insemination.

Source: www.sfchronicle.com