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Тема |
Re: проблемът има няколко аспекта [re: genefan] |
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Автор |
genefan (член) |
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Публикувано | 13.04.09 15:18 |
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Ето едно последно аутозомно (т.е по всички хромозоми) генетично изследване за Европа. За съжеление България не фигурира, но заключенията са ясни. Има силна корелация между гени и географско разположение, като всичко се изменя постепенно, а не рязко по етнически или географски граници. Докато мтДНК в Европа е сравнително хомогенна, то У хромозома и аутозомна картини долу-горе съвпадат.
According to current theory, the autosomal gene pool of extant
human populations in Europe lacks sharp discontinuities [1, 2],
with the exception of known isolates such as the Finns [6, 7].
For classical genetic markers including, for example, erythrocyte
antigens, changes in population genetic structure have
been observed to follow a predominantly southeast-northwest
gradient [1, 2], thereby apparently matching the Pleistocene
settlement of Europe, the Neolithic expansion from the Fertile
Crescent, and (at least in part) the postglacial resettlement of
Europe during the Mesolithic. Such gradient was also observed
with particular haplogroups derived from the nonrecombining
part of the Y chromosome (NRY), but other NRY data revealed
additional population structure in Europe that has been associated
with various demographic events in prehistoric, historic,
and modern times [8–10]. In contrast, the European mitochondrial
DNA pool has been found to be rather homogeneous [11].
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