Scientists have managed to create mice with two biological fathers, which could lead to implications for same-sex reproduction in the future.
Researchers at Kyushu University, in Japan, were able to create lab-grown egg cells by using the skin cells of male mice.
While creating mice with two biological fathers was technically possible prior to the achievement, it involved a series of elaborate steps, including genetic engineering.
After creating stem cells from eight-week-old male mice, scientists manipulated the genetic code of the cell to create a mature egg.
After successful cultivation, the eggs were fertilised and implanted into a surrogate mouse, which eventually resulted in the birth of seven mouse pups.
The breakthrough could revolutionise infertility treatments, as well as potentially create a new method of conception for same-sex couples.
Research director Katsuhiko Hayashi presented the