Fig. 3

Introgression at the IGFBP2 gene region. a. Manhattan plot of D values between XJHT local chickens and grey junglefowl. The dashed line indicates the significance threshold (top 1% of the distribution of D values). b. ML tree constructed with the IGFBP2 gene sequence. The introgression event was highlighted with orange color, the introgressed XJHT individual and the grey junglefowl were highlighted with red and blue color, respectively. c. Mean pairwise sequence divergence at the IGFBP2 gene region between the introgressed XJHT local chickens (INDOC) and either grey junglefowl (GyJ) or remaining non-introgressed XJHT local chickens (ODOC), represents by red and blue lines, respectively. The shaded area represents the IGFBP2 gene region