A genetic study has shown that the oldest known human DNA lineages are those of East Africans. afarensis ("Lucy"), a possible human ancestor, were found at Hadar, Ethiopia. ‘New DNA evidence suggests "African Eve", the 150,000-year-old female ancestor of every person on Earth, may have lived in Tanzania or Ethiopia. Watafiti wanasema kuwa The African Eve ndiye asili ya wanadamu wote na katika kufuatilia DNA inaonesha kwamba huyo aliishi eneo ambalo kwa sasa linaitwa Tanzania. Accordingly the woman was promptly dubbed "the African Eve". Research also shows that the story begins in Africa, home to the greatest variation in human DNA, and therefore the oldest location. DNA research suggests that all surviving humans are descended from one woman who lived perhaps 200,000 years ago. A Scot, a Japanese and an Australian Aborigine are far more closely linked by family inheritance than any three chimpanzees from different African groups. The evidence of DNA reveals that all humans are very closely related. Random infrequent changes once again provide a way of estimating the number of generations back to a shared ancestor. Conversely, the Y chromosome – a twisted rope composed entirely of DNA – is inherited by males from the father. So comparison of two samples of mtDNA will show degrees of kinship and ancestral origin. Every few generations, a random mutation creeps into this familial signature. Mitochondrial DNA (mtDNA) is inherited only from the mother. DNA serves as a lineal history, a family album, a passport that bears the marks of both origin and journey. Linaeleza kuwa asili ya wanadamu wote duniani ni Africaīut modern humans carry within their tissues a different kind of evidence. Mtandao wa The guardian kwenye chapisho lake la Mitochondrial DNA and the mysteries of human evolution.
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