Fig. 8.

Stage-specific transcriptional activity of zebrafish lcpl ECR4.

A. Schematic of the first coding exon of lcp1. 5’ UTR = purple; protein-coding region = green.

B. Spliced ESTs form an inconspicuous ‘foothill’ upstream of the first coding exon.

C. RNA-seq reads by stage. Intronic expression (orange) is absent prior to dome stage but becomes strong at 30% epiboly and persists until segmentation (14–19 somites). Intronic read activity is absent at later stages (dark green) which show only canonical expression of the first coding exon. Source: UCSC Genome Browser, DANIO-CODE track hub