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Survey of the nucleotide diversity around the centromere on chromosome 6. (A) A physical map of the candidate region for the S6 gene. The position of the centoromere is indicated by a solid circle. (B) Levels of nucleotide diversity (θw) for the S6, 
, and 
carriers at five sites in the chromosomal region. (C) The relative diversities of the S6 and 
carriers to the 
carriers at five sites in the chromosomal region.
