Don't Need No Man
Scientists in Northern Ireland have discovered that hammerhead sharks can reproduce asexually. In 2001, a female hammerhead shark that's been in captivity since it was a pup and didn't have any contact with a male for 3 years recently gave birth at a zoo on Nebraska. At first they thought mebbe she had incubated the sperm for 3 years or had mated with another species in the tank. When they tested the pup's DNA, it had no traces of paternal DNA. The DNA was only from the mother which also rules out mating with another species.
Dr Paulo Prodohl, of Queen's School of Biological Sciences, headed the university's research team and co-wrote the study said: "The findings were really surprising because as far as anyone knew, all sharks reproduced only sexually by a male and female mating.
By min | May 23, 2007, 12:00 PM | Science
i think some of the female dinosaurs turned into males so they could reproduce. It was based on them using a specific species of frog DNA to fill in the gaps of what they had from the mosquito blood.