Figure 1

Diagram of the arthropod Mhc1 genes with exon-intron structure. The gene structures of the arthropod muscle myosins genes are shown using the following color code: light-gray: intron sequences; dark-gray: common exons; colored: alternatively spliced exons. The Drosophila melanogaster Mhc1 gene is shown as representative for all Drosophila sp. Mhc1 genes, because their gene structures only differ in the length of the introns. The transcriptional and translational start sites, the stop codons and polyadenylation sites are shown if they have been determined. Some genes are spread on several contigs. The corresponding gap positions are shown in black, if further exons are not expected, and in red, if exons are definitively missing. The genes are drawn to scale except for the Aedes aegypti genes where the extremely long introns have been shortened. Gaps have been filled with 100 bp although their exact length is unknown.