Spectral evolution, for DMo simulations, in the redshift range used to compile shear spectra. Spectra obtained with f = 5 are shown. Simulations are also compared with the HF predictions. In the top panel, we show all spectra (multiplied by k^3/2, to allow an overall comparison) in a restricted k range. Redshift values are shown along aside each curve. In the bottom panel, we select five redshift values and plot spectra over a wider k interval. Substantial discrepancies from HF are evident, even at low k values, at any redshift.