Biologists found a female shark which was pregnant without the involvement of a male.The embryo’s found in the shark solely had the mothers DNA.Scientists think this is a mechanism and ability of nature to avoid extinction. The ability to reproduce without the fertilization of a male is called ‘Parthenogenesis’ This is the second time parthenogenesis is witnissed among sharks. Other species among which parthenogenesis occurs are some bird, snake, fish and scorpion species.
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Archive for October, 2008
Arulanantham Suresh Joachim (Sri Lanka) balanced on one foot for 76 hours and 40 minutes at Vihara Maha Devi Park Open Air Stadium, Sri Lanka, from May 22-25, 1997. Source:http://www.guinnessworldrecords.com/records/amazing_feats/marathon_efforts/longest_duration_balancing_on_one_foot.aspx

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