Multiple regression analysis of EL, EB and several gene parameters.

Results from multiple-regression analyses of level of gene expression (EL) and breadth (EB) and length (of 5′, CDS, intron, 3′ and primary transcript, PT) when controlling for regional and genic effects. The results for the intron number are also shown. All lengths were log10 transformed.
Note. PT = Primary Transcript; n.a. = not applicable; Significance levels: ns = not significant; §P<0.05 †P<0.01; ‡P<0.001;*P<0.0001. In bold: values that are significant after Bonferroni correction for multiple regression. Alpha level was adjusted separately for each type of model: EL,EB: 0.05/2 = 0.025; EL,EB & regional: 0.05/4 = 0.0125; EL,EB, regional+genic = 0.05/9 = 0.0056 (see Mundfrom et al 2006).
1regional variables: intergenic spacers length and intergenic spacers GC content. Genes without intergenic spacers were excluded.
2genic variables; 5′,CDS,Intron,3′, primary transcript lengths and intron number. Genes without introns were not included in the analyses.
3,4genes without introns were excluded from the analyses.