Network of interactions among pair-rule genes regulating paired expression during primordial segmentation of Drosophila
A model of the trans-regulation of the Drosophila pair-rule segmentation gene, paired (prd), has been derived from the observed alterations in the distribution of prd transcripts during early embryogenesis in single and double pair-rule mutants. Important aspects of the model include the following features and implications: (i) The regulation of prd is subject to a regulatory hierarchy among pair-
