Sharks can reproduce "immaculate conception"

In 2001, the year the zoo «Henry Doorly» (Nebraska, USA) were three female hammerhead shark. They were caught in the three years before, and all this time living without males. However, this did not prevent one of them in captivity to give birth to a cub.

Under assumptions of some scholars shark was fertilized before she was caught, and spe * ma father of the child, all these three years, hiding in itself. Others argued that this fact suggests that sharks can reproduce by parthenogenesis, ie without participation of males. In 2007, the year a study was conducted DNA cub, which showed that his mother's genes are present only. Thus it was proved that sharks can reproduce "blameless».

This was not the case: in 2008, the year of such an event occurred. Pregnant shark died in Virginia Aquarium & Marine Science Center. Her unborn offspring was also conceived without the participation of males.

via factroom.ru