Scientists have just discovered that female American crocodiles can produce offspring without males—a phenomenon known as facultative parthenogenesis, or “virgin birth." Such asexual ...

One possibility is that this represents a case of "parthenogenesis", a rare form of asexual reproduction exhibited in sharks that lets them give birth without needing to mate. When eggs are ...

This is the first time that reproduction without having had sex—known as parthenogenesis—has been seen in this species. "This study reports the first case of facultative parthenogenesis in the ...

However, this is the first evidence of parthenogenesis in a crocodile. It's not clear why some animals make the switch, but it is thought to be "a response to when all else fails". Without a ...

Scientists have two main theories. The aquarium says Yoko's birth could be the result of either delayed fertilization or parthenogenesis, a rare form of asexual reproduction — in which offspring ...

The process of developing an embryo without a fertilized egg cell is called parthenogenesis. Parthenogenesis, which means "virgin creation" in Greek, occurs mainly in some jawed vertebrates ...

For the first time, scientists have induced facultative parthenogenesis, a form of asexual reproduction, in an animal that usually reproduces sexually. An estimated 76 percent of fruit flies can ...