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Typus
Verschleierung
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 17, Zeilen: 1-24
Quelle: Wikipedia Recent African origin of modern humans 2007
Seite(n): 1 (online source), Zeilen: -
Genetic evidence suggests that humans departed Africa only once. The mtDNA M and N haplogroups are derived from haplogroup L3, and they both suggest a single exit from Africa. The distribution of the M158 Y chromosome haplotype of the "Eurasian Adam" indicates a similar history, dating the period between 30-79,000 years ago. During the period in which it is thought (on genetic evidence) humans left Africa, between 55,000 and 85,000 years ago, paleoclimatological evidence suggests that a vast belt of desert stretched from the West African Atlantic border to the Eastern Siberian Pacific border. These deserts confined humans south of that line, and reduced the food returns to cultures based exclusively on grassland and woodland based hunter gatherer technologies. The M haplogroups seems to support the existence of this barrier. The fall in sea levels at the time opened up the second route out of Africa, and the growth of a beachcombing lifestyle, confirmed at the perched coastline shell-middens at Zuli Bay, allowed additional dietary supplements, in the form of hunting large game and with highly nutritious shellfish.

Low glacial sea levels at this period would have been the first time in millennia that permitted a dry crossing from the Gulf of Aden to the islands East of Java facing Australia. Among Y-chromosomal haplogroups, the M130 and the M174 YAP gene haplogroups in particular support this hypothesis as their path follows a great arc along the shorelines of Saudi Arabia, India, South East Asia and Australia. This beachcomber society moved on through Southern China and Taiwan to Japan and Eastern Siberia. Approximately 8-10,000 years ago the M130 haplogroup was carried by Na-Dené speaking peoples into the North West Pacific coast of America (Forster, 2004).


Forster, P., Ice ages and the mitochondrial DNA chronology of human dispersals: a review, Philos Trans R Soc Lond B Biol Sci , 359 , 255-264, 2004.

Genetic evidence suggests Homo sapiens left Africa in prehistoric times only once. The mtDNA M* and N* haplogroups derive from haplogroup L3, and suggest a single exit from Africa. The distribution of the M158 Y chromosome haplotype of the "Eurasian Adam" shows a similar history, dating to the period between 30,000 - 79,000 years ago. In the period in which it is thought, on genetic evidence, humans left Africa, between 75,000 and 85,000 years ago, paleoclimatological evidence suggests a vast belt of desert stretched from the West African Atlantic to the Eastern Siberian Pacific. These deserts kept AMH humans confined south of that line, and reduced the food returns to cultures based exclusively on grassland and woodland based hunter gatherer technologies. The M* haplogroups seems to support the existence of this barrier. The drop in sea levels at the time did open up the second route out of Africa, and the growth of a beachcombing lifestyle, confirmed at the perched coastline shell-middens at Zuli Bay, did allow dietary supplementing of hunting of large game with highly nutritious shellfish.

Low glacial sea levels at this period would have been the first time in millennia permitting a dry walk from the Gulf of Aden to the islands East of Java facing Australia.(citation needed) Among Y-chromosomal haplogroups, the M130 and the M174 YAP gene haplogroups in particular confirm this hypothesis as their path traces a great arc along the shorelines of Saudi Arabia, India, South East Asia and Australia. This beachcomber culture moved on through southern China, and Taiwan to Japan and Eastern Siberia. There about 8-10,000 years ago the M130 haplogroup was carried by Na-Dené speaking peoples into the North West Pacific coast of America.

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(Hindemith) Schumann

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