Evolution puts checks on virgin births
Friday, April 17, 2015 - 08:30
in Biology & Nature
It seems unnatural that a species could survive without having sex. Yet over the ages, evolution has endowed females of certain species of amphibians, reptiles and fish with the ability to clone themselves, and perpetuate offspring without males. Researchers have found that in species where females have evolved the ability to reproduce without males relatively recently, fertilization is still ensuring the survival of the maximum number of healthy offspring and thus males are still needed.