Africans in Yorkshire? The deepest-rooting clade of the Y phylogeny within an English genealogy
Africans in Yorkshire? The deepest-rooting clade of the Y phylogeny within an English genealogy
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DOI：
10.1038/sj.ejhg.5201771
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发表时间：
2007-03-01
影响因子：
5.2
通讯作者：
Jobling, Mark A.
中科院分区：
文献类型：
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作者：
King, Turi E.;Parkin, Emma J.;Jobling, Mark A.
早在罗马时代，就有非洲人出现在英国的记录，但在现代居民中没有留下明显的遗传痕迹。Y染色体属于Y系统发育中根最深的分支，单倍群（hg） A，被认为是非洲特有的，没有来自英国或西欧其他地方的例子报道。我们描述了hgA1染色体的存在在一个土著英国男性；与非洲的例子比较表明它起源于西非。在18名拥有与原男性相同的罕见东约克郡姓氏的男性中，有7人也携带hgA1染色体，文献研究将他们分为两种家谱，其中最近的共同祖先生活在18世纪末的约克郡。使用77个y -短串联重复序列（STRs）进行的分析与几代前的合并一致。我们的发现代表了“土著”英国人中非洲人的第一个遗传证据，并强调了人类迁移历史的复杂性以及从y染色体单倍型分配地理起源的陷阱。
The presence of Africans in Britain has been recorded since Roman times, but has left no apparent genetic trace among modern inhabitants. Y chromosomes belonging to the deepest-rooting clade of the Y phylogeny, haplogroup (hg) A, are regarded as African-specific, and no examples have been reported from Britain or elsewhere in Western Europe. We describe the presence of an hgA1 chromosome in an indigenous British male; comparison with African examples suggests a Western African origin. Seven out of 18 men carrying the same rare east-Yorkshire surname as the original male also carry hgA1 chromosomes, and documentary research resolves them into two genealogies with most-recent-common-ancestors living in Yorkshire in the late 18th century. Analysis using 77 Y-short tandem repeats (STRs) is consistent with coalescence a few generations earlier. Our findings represent the first genetic evidence of Africans among 'indigenous' British, and emphasize the complexity of human migration history as well as the pitfalls of assigning geographical origin from Y-chromosomal haplotypes.