Replicated high-density genetic maps of two great tit populations reveal fine-scale genomic departures from sex-equal recombination rates.

Cross-correlations, in SDI_local, between the two populations were positive at all 22 chromosomes considered (range in r =0.05–0.999; median r =0.668; Supplementary Table 1 ). A sign test on all 22 correlations being positive is highly significant ( P =4.8 × 10 −7 , assuming a null expectation of a correlation being equally likely to be positive or negative).

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