Distribution of the morphological indexes with respect to the redshift. To avoid any contamination due brightness and distance, only sources with R< 19 enter into the averages. Moreover, to avoid contamination from different selection criteria, the sources were selected just from the SDSS list. The color code is dark symbols for B, half colored symbols for R, and clear symbols for I. Symbols are slightly offset but refer to the same redshift bin. B morphological indexes are offset to the left, and I morphological indexes are offset to the right.