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Denisova-hominien

Die Denisova-grot, waar die eerste Denisova-fossiele ontdek is.

Die Denisova-hominien of Homo denisova is óf ’n Steentydperk-spesie van die genus Homo óf ’n subspesie van Homo sapiens. Wetenskaplikes het in Maart 2010 die ontdekking aangekondig van ’n vingerbeen van ’n jong vrou wat sowat 41 000 jaar gelede geleef het. Dit is gevind in ’n grot in Siberië wat ook bewoon is deur Neanderdallers en anatomies moderne mense,[1][2][3] hoewel DNS-studies getoon het dit verskil van albei dié spesies.[4]

Daaropvolgende studies het getoon die groep het ’n gemeenskaplike oorsprong met Neanderdallers, dat hul woongebied gestrek het van Siberië tot Suidoos-Asië en dat hulle verbaster het met die voorsate van die moderne mens.[5][6] ’n Vergelyking met Neanderdallers uit dieselfde grot dui op ’n groot mate van verbastering, met die plaaslike Neanderdaller-DNS wat 17% uitmaak van die Denisova-genoom. Daar was ook tekens van verbastering met ’n tot nog toe ongeïdentifiseerde Archaïese menslike linie.[7]

Twee tande en ’n toonbeentjie van verskillende individue van dieselfde bevolking is ook gevind.

Verwysings

[wysig | wysig bron]
  1. David Leveille (31 Augustus 2012). "Scientists Map An Extinct Denisovan Girl's Genome" (in Engels). The World. Geargiveer vanaf die oorspronklike op 24 Julie 2013. Besoek op 31 Augustus 2012.
  2. Brown, David (25 Maart 2010), "DNA from bone shows new human forerunner, and raises array of questions", Washington Post, http://www.washingtonpost.com/wp-dyn/content/article/2010/03/24/AR2010032401926_pf.html 
  3. Krause, Johannes; Fu, Qiaomei; Good, Jeffrey M.; Viola, Bence; Shunkov, Michael V.; Derevianko, Anatoli P. & Pääbo, Svante (2010), "The complete mitochondrial DNA genome of an unknown hominin from southern Siberia", Nature 464 (7290): 894–897, doi:10.1038/nature08976, PMID 20336068 
  4. Katsnelson, Alla (24 Maart 2010), "New hominin found via mtDNA", The Scientist, archived from the original on 22 November 2010, https://www.webcitation.org/5uQpd7txa?url=http://www.the-scientist.com/blog/display/57254/#ixzz0j820ioz1, besoek op 9 Maart 2014 
  5. Carl Zimmer (22 Desember 2010). "Denisovans Were Neanderthals' Cousins, DNA Analysis Reveals". NYTimes.com (in Engels). Geargiveer vanaf die oorspronklike op 28 November 2019. Besoek op 22 Desember 2010.
  6. Callaway, Ewen (22 September 2011), First Aboriginal genome sequenced, Nature News, doi:10.1038/news.2011.551, http://www.nature.com/news/2011/110922/full/news.2011.551.html 
  7. Pennisi, Elizabeth (2013), "More Genomes from Denisova Cave Show Mixing of Early Human Groups", Science 340 (6134): 799, doi:10.1126/science.340.6134.799, http://www.sciencemag.org/content/340/6134/799.summary 
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Denisova-hominien
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