Scientists Grew a Mouse Fetus Without Sperm or Eggs

‘The possibility of the end of sex… is very real’

Credit: Adam Gault/Getty Images

Reproduction used to be a simple thing: two parents, one egg, one sperm, one embryo, one baby. But on Friday, a study published in Cell complicated — or simplified, depending on who you ask — the arithmetic. Researchers report that they have successfully created mouse fetuses without using…