The Roots Of Prehistoric Australian Settlers

The discusses work done by scientists in tracing the bring on of the original Australian settlers . There are currently many another(prenominal) a(prenominal) questions still surrounding the roots of past Australian settlers . The oldest valet fossils outside of Africa are establish in Australia which is puzzling boldness the large distance between Australia and Africa . There are besides two distinct sets of prehistoric people in Australia . The senior finds at Lake Mungo are gracile . On the other cut into , the younger finds show robust morphology . To find clues next to the puzzle , the scientists used DNA analysis . They contrastd the genetic mollify 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 branches M and N in the global genetic tree . The Y chromosome samples were launch to be in line with branches C and F . These branches histrionics 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 put between the Australian samples and the genetic make up about 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) . archetypal wha t are the details about where the samples we! re taken ? Did the scientists pay take away the samples from today s aboriginal Australians or from the fossil record . second , why did they choose mtDNA and the Y chromosome as the genetic sequences to differentiate ? What is the importance of these two in determining the migratory or evolutionary path of a people ...If you want to irritation a full essay, order it on our website: OrderCustomPaper.com

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