Evolution of the dust-to-gas and dust-to-metal mass ratios for EIT08M. Calculations for galaxies with initial gas masses of M_ini = 5 × 10¹⁰ M_⊙ are presented in the first and second columns and for M_ini = 1 × 10¹¹ M_⊙ in the third and fourth columns. Results are presented for a “maximum” (top row), a “high” (middle row), and a “low” (bottom row) SN dust production efficiency ϵ_i(m). Dust destruction is taken into account for M_cl = 100   M_⊙ (first and third columns) and 0 M_⊙ (second and fourth columns). The upper group of thick curves signifies the dust-to-metal mass ratio η_Zd(t). The lower group of thin curves represents the dust-to-gas mass ratio η_d(t). The gas-to-dust ratio displayed in the figures is calculated for a Larson 2 IMF at an epoch of 400 Myr. The grey vertical dashed lines indicate epochs at 400, and 500 Myr after the onset of starburst. The black solid, green dotted, and blue dashed-dot-dotted lines represent the Salpeter, mass-heavy and Larson 2 IMF, respectively.