Similar levels of X-linked and autosomal nucleotide variation in African and non-African populations of Drosophila melanogaster.

When partitioned by chromosomal location, X-linked loci also show significantly elevated diversity in African strains (17.30 × 10 -3 versus 8.15 × 10 -3 , P = 0.008, paired sign test), while the increase in African diversity at autosomal loci was only marginally statistically significant (17.79 × 10 -3 versus 9.39 × 10 -3 , P = 0.07, paired sign test).

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