Galaxy power spectrum, evaluated at redshifts z = 0.001 (upper panel) and z = 2.0 (lower panel), broken down into the contributions from one-halo (1h) and two-halo (2h) terms, with (solid) and without (dashed) including the mixing terms between early-type (ET) and late-type (LT) galaxy populations. Red curves: 1h terms from ET (solid), LT (dashed) galaxies, and the mix (1h mix, dotted) between the two. Green curves: 2h terms from ET (solid), LT (dashed) galaxies and the mixing (2h mix, dotted) between the two. Black dashed curve: galaxy power spectrum without mixing terms between the two galaxy populations (PS without mix). Black solid curve: galaxy power spectrum with mixing terms (PS with mix).