Science Advances

Supplementary Materials

This PDF file includes:

  • table S1. Additional information for all samples analyzed in this study.
  • table S2. Genotyping results of Y chromosomal SNPs for successfully genotyped samples.
  • table S3. Test of temporal changes in allele frequencies between the four time bins.
  • table S4. Settings and operators of the MCMC procedure used for the final inference of selection coefficients and other parameters.
  • fig. S1. Y-HT-1 showed very low allele frequency in early domestic horses.
  • fig. S2. The three simulation approaches concur regarding a low initial Y-HT-1 frequency.
  • fig. S3. All analyses yield strong support for positive selection of Y-HT-1.
  • fig. S4. One selection coefficient for Y-HT-1 across all time periods was mostly supported.
  • fig. S5. Several Y chromosome haplotypes were under selection.

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