'Female sharks can fertilise their own eggs and give birth without any sperm from a male shark, according to a new study into the asexual reproduction of a hammerhead in a Nebraska zoo.
'The joint Northern Ireland-US research, being published on Wednesday in the Royal Society journal Biology Letters, analysed the DNA of a shark born in 2001 in the Henry Doorly Zoo - in a tank with three potential mothers, none of whom had contact with a male hammerhead for at least three years.' (News 24 article).
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