2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162090Much evolutionary information is stored in the fluctuations of protein length distributions. The genome size and non-coding DNA content can be calculated based only on the protein length distributions. So there is intrinsic relationship between the coding DNA size and non-coding DNA size. According to the correlations and quasi-periodicity of protein length distributions, we can classify life into three domains. Strong evidences are found to support the order in the structures of protein length distributions.5 pages, 3 figuresGenomicsQuantitative MethodsPrediction of genomic properties and classification of life by protein length distributionstext