Fig. 5

Introgression analysis of CPZ gene region. A Manhattan plot of D values between G. g. gallus and SEA. The blue horizontal line indicates the significance threshold (top 1% of D values). B The ML tree constructed with the CPZ gene sequence. The introgression event was highlighted with orange color, the introgressed SEA and the G. g. gallus were highlighted with blue and red color, respectively. C The distribution of dxy surrounding the introgressed region in CPZ between the introgressed domestic chicken (INDC) and either introgressed G. g. gallus (ING. g. gallus) or remaining non-introgressed domestic chicken (NDC). D Gene structure diagram of CPZ and allele frequency of mutant CPZ loci. Blue, red, and orange represent homozygous wild-type, homozygous mutant, and heterozygous mutant, respectively. GGB: G. g. bankiva, GGG: G. g. gallus, GGM: G. g. murghi, GGJ: G. g. jabouillei, GGS: G. g. spadiceus