A new study finds that the age of a mother has no bearing on the risk for autism or schizophrenia in her offspring. According to the study, the genetic risks for these disorders originate in the sperm, not the egg, and are directly linked to paternal age. How might the finding reshape our perception of male-female biological clocks?
Is There a Male Biological Clock?
Kari Stefansson, chief executive of deCODE Genetics and the study's senior author
Evan Eichler, professor of genome sciences at the University of Washington, Seattle
Harry Fisch, professor of urology and reproductive medicine at Cornell and author of "The Male Biological Clock"