Evolution with redshift of 5 main disk properties of disk galaxies which lie along the star-forming galaxy main sequence shown for a range of mass bins. Legend in the lower right gives the stellar mass values for each curve in the panels. Upper left: gas mass fraction, f_gas, as a function of redshift for 5 stellar mass bins. Upper centre: fraction of the gas which is fragmented, f_frag. Upper right: average half mass radius, r₅₀, of the ensemble of star-forming model galaxies. Lower left: diffuse gas density, ρ_diff. Lower right: ratio of the gas velocity dispersion to orbital velocity, .