Detection of altitude‐related genetic variants using BayPass. (a) Genomic landscape of the p‐values in the BayPass analysis in the genomes of domestic chickens at four altitude levels. Red line, selection criteria for BayPass; black dots, strongly selected single‐nucleotide polymorphisms (SNPs). (b) Pattern of genotypes among chickens at all altitudes in the selected genomic region. (c) Pie charts representing the spectrum of allele frequencies at the missense loci of the focused genes MMRN1, HRG, and HBAD (from left to right) in the Tibetan chicken (TBC), as well as Nixi (NX), Lijiang (LJ), and other chickens inhabiting 1500 m and 500 m altitudes. The type of variant allele is indicated in orange, whereas the reference allele is indicated in blue.