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ArishMell · 70-79, M
None.
Genetic dilution of "root stock" doubles with every generation, so assume a mean number of 4 generations per century.
One half (approximately) of an individual's DNA is from the mother, the other half from the father.
So [1 / (2^1)] of each parent's genetic code.
Theirs similarly so we inherit [1 / (2^2) ] grandparental genetic material. A quarter
Great-grandparents: [1/8] = [1 / (2 ^3) ]. An eigth.
G-G-Parents: our inherited fraction of theirs is already down to a sixteenth from each [1 / ( 2^4) ]...
and so on.
Go back, say 3000 years at the same rate, that is 120 generations. So we would each hold only [ 1 / (2^120) ] of our individual ancestor's DNA.
So for those modern Middle-Easterners whose own predecessors were all Middle-Easterners / North-Africans, all a DNA test could show are vaguely which North African / Middle Eastern region their ancestors may have inhabited.
Further, such tests are purely biological. They analyse DNA for lingering regional characteristics, over huge regions. They have no national, social, cultural, religious or other artificial significance at all.
Genetic dilution of "root stock" doubles with every generation, so assume a mean number of 4 generations per century.
One half (approximately) of an individual's DNA is from the mother, the other half from the father.
So [1 / (2^1)] of each parent's genetic code.
Theirs similarly so we inherit [1 / (2^2) ] grandparental genetic material. A quarter
Great-grandparents: [1/8] = [1 / (2 ^3) ]. An eigth.
G-G-Parents: our inherited fraction of theirs is already down to a sixteenth from each [1 / ( 2^4) ]...
and so on.
Go back, say 3000 years at the same rate, that is 120 generations. So we would each hold only [ 1 / (2^120) ] of our individual ancestor's DNA.
So for those modern Middle-Easterners whose own predecessors were all Middle-Easterners / North-Africans, all a DNA test could show are vaguely which North African / Middle Eastern region their ancestors may have inhabited.
Further, such tests are purely biological. They analyse DNA for lingering regional characteristics, over huge regions. They have no national, social, cultural, religious or other artificial significance at all.