Figure 3.

Scatter plot of intraclass correlation coefficient in MZ versus DZ twins. (a) bacterial species intraclass correlation coefficient (ICC) plotted for MZ versus DZ-SS twins, (b) MZ versus DZ-OS twins, (c) DZ-SS versus DZ-OS twins, and (d) MZ versus all DZ twins. ICC values are presented for species with a prevalence ≥5%. Each dot represents a single species with the dot-size indicating the species prevalence. The line represents the diagonal where X = Y. The Mann–Whitney U tests were used for group comparisons. Density was predicted using the Kernel estimation.