For high-level functional categories that are represented in almost all prokaryotic genomes, the numbers of genes in these categories scale as power-laws in the total number of genes. We present a comprehensive analysis of the variation in these scaling laws across prokaryotic clades and lifestyles. For the large majority of functional categories, including transcription regulators, the inferre...

0. Introduction The status of functional categories in early child language has been a subject of debate for much of the last decade (Hyams 1986, Radford 1990, Platzack 1992, Rizzi 1993, Wexler 1994). In general, proponents of the ‘No Functional Categories’ position claim that production data from early child language clearly demonstrates that the differences between child language and adult la...