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Divergence between the X and Y chromosomes (e.g. measured as F ST) can be used to scan for loci under sexually antagonistic selection in the recombining (or pseudoautosomal) region of sex chromosomes. Coalescent models show that divergence declines as we move down the chromosomes, away from the sex-determining region (SDR, at left). Divergence will again peak in the vicinity of a locus under sexually antagonistic selection (marked as SA). After Kirkpatrick and Guerrero (2014).
