Total (dashed lines), major (shaded areas), and minor (hatched shading) merger fraction as a function of M_* for AGN (left two panels) and non-AGN (right two panels) host galaxies in under-dense (blue lines and shades) and over-dense (magenta lines and shades) environments at z = 0. The solid shaded regions in the left panels represent major mergers, while the dashed lines indicate the total merger fraction within each stellar mass bin. The hatched shaded regions in the right panels correspond to the minor mergers. Error bars show the 16th and 84th percentiles from the bootstrap distribution of 1000 samples. We also tested jackknife errors and found that the bootstrap errors were larger.