The Roots Of Prehistoric Australian Settlers

The discusses work done by scientists in tracing the vex of the original Australian settlers . There are currently more a(prenominal) questions still surrounding the roots of past Australian settlers . The oldest gentleman fossils outside of Africa are establish in Australia which is puzzling supposition the large distance between Australia and Africa . There are same two distinct sets of prehistoric people in Australia . The precedential finds at Lake Mungo are gracile . On the other human activity , the younger finds show robust morphology . To find clues tight to the puzzle , the scientists used DNA analysis . They contrastd the genetic date of the aboriginal Australians to the known world DNA tree . The samples came from mtDNA and the Y chromosome . The mtDNA samples were demonstrate to be in line with branch es M and N in the global genetic tree . The Y chromosome samples were show to be in line with branches C and F . These branches say-so the samples with the exodus from Africa most 50-70 ,000 years ago . This tells us that prehistoric Australian settlers came from Africa 50 ,000 years ago .

This is backed by the archaeological evidences . A large disparity was also install between the Australian samples and the genetic make up close to the Indian Ocean . This meant that the two populations have been isolated for a long timeTwo questions that I have about the include the following(a) . first gear what are the details about where the samples were taken ? Did the scientists pay stumbl e the samples from today s aboriginal Austra! lians or from the fossil record . secondly , why did they choose mtDNA and the Y chromosome as the genetic sequences to canvas ? What is the importance of these two in determining the migratory or evolutionary path of a people ...If you want to occupy a full essay, order it on our website: OrderEssay.net

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