Scientists create mice with two fathers after making eggs from male cells

The research marks the first time viable eggs have been cultivated from male cells – a significant advance. Photograph: David A Northcott/Getty Images

Scientists have created mice with two biological fathers by generating eggs from male cells, a development that opens up radical new possibilities for reproduction.

The advance could ultimately pave the way for treatments for severe forms of infertility, as well as raising the tantalising prospect of same-sex couples being able to have a biological child together in the future.