Fig. 4. Patterns of sector adjacency were scored for all chimeras used in this study. For this graph, only GUS– sectors in cotyledons and leaf 1 and 2 were scored for adjacency; these organs were selected because they are the oldest organs, with cotyledons being specified during embryonic development and leaf specification occurring soon after germination. The eight margins of these four organs were scored, however plants with only one, or those with seven or more, GUS– margins were omitted as their GUS– regions were wholly entire by default. The numbers of chimeric plants of a given sector size (two to six margins) are separated into chimeras with contiguous sectors and chimeras with non-contiguous sectors. Black bars show numbers of plants with the indicated number of GUS– margins whose sectors are wholly adjacent and white bars show the numbers of plants whose GUS– sectors show non-adjacency.