24 May 2007

No sex please, we’re female sharks!

Female sharks can reproduce without having sex, researchers have found. A female hammerhead shark has given birth without mating with a male and its offspring has no paternal DNA. An international team of scientists from Queen's University Belfast, the Guy Harvey Research Institute at Nova Southeastern University in Florida and the Henry Doorly Zoo in Nebraska has found evidence that sharks can reproduce asexually by an unusual method known as "parthenogenesis". This is the first scientific report of asexual reproduction in sharks........

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