Last Mammoths Spent Final Years on Solitary Island MAY 4, 2015
Last Mammoths
- Tutkijat ovat nyt saaneet selville, että viimeiset villimammutit ovat luultavasti kuolleet eristyksillä saarilla.
- Mittaamalla geneettisen monimuotoisuuden määrän kussakin yksilössä he pystyivät tekemään johtopäätöksiä mammutin historiasta ja sukupuutosta.
- Viime jääkäyden lopussa, n.1000 vuotta sitten populaatio väheni jälleen.
- The scientists used DNA from two specimens, the 45,000-year-old soft tissue remains of a woolly mammoth found in northeastern Siberia, and a 4,300-year-old tooth from one found on Wrangel Island
- About 300,000 years ago, the population of woolly mammoths suddenly declined
- By the time Wrangel Island separated from the mainland, the worldwide population was already disappearing.
- The parents of the specimen from Wrangel Island were very closely related.
- this does not mean that a Jurassic Park — or a Pleistocene Park, as it would have to be called — is around the corner.
- Researchers have now sequenced the genome of the woolly mammoth and have concluded that the last members of the species probably died on isolated iland.
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