Scientists have created mice with two biological fathers. They say the technique could one day be replicated in humans.

• Scientists said they created a mouse from two biological fathers. 
• Speaking at a conference, they said they made female eggs from male cells. 
• The study, which is very early, raises hope that same-sex partners could have biological children.

Scientists claim they have created mice with two fathers in a breakthrough that could someday be replicated in humans. 

Katsuhiko Hayashi from Osaka University told the Human Genome Editing conference on Wednesday that he achieved the breakthrough after changing the chromosomes in a male cell from XY to XX.