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Tracing the origin and geographic distribution of an ancestral form of the modern human Y chromosome RChHN
BRAVI,CLAUDIO M; BAILLIET,GRACIELA; MARTÍNEZ-MARIGNAC,VERÓNICA L; BIANCHI,NESTOR O.
We screened a total of 841 Y chromosomes representing 36 human populations of wide geographical distribution for the presence of a Y-specific Alu insert (YAP+ chromosomes). The Alu element was found in 77 cases. We tested five biallelic and eight polyallelic markers in 70 out of the 77 YAP+ chromosomes. We could identify the existence of a hierarchical and chronological structuring of ancestral and derived YAP+ lineages giving rise to four haplogroups, 14 subhaplogroups and 60 haplotypes. Moreover, we propose a monophyletic origin for each one of the YAP+ lineages. Out-of-Africa and out_of-Asia models have been suggested to explain the origin and evolution of ancestral and derived YAP+ elements. We analyse the evidence supporting these two hypotheses and...
Tipo: Journal article Palavras-chave: YAP+ chromosomes; YAP+ lineages; Y-specific Alu inserts.
Ano: 2001 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000000018
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