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Fig. 6. | BMC Biology

Fig. 6.

From: Dorsal spine evolution in threespine sticklebacks via a splicing change in MSX2A

Fig. 6.

Alignment of the MSX2ACPEB4ASTC2A region in acanthopterygian genomes. Ensembl 82 genome browser view [65] of an alignment between the stickleback genome and the genomes of tetraodon, fugu, tilapia, platyfish, and medaka. These species share a common ancestor that had spiny fin rays [66, 67], and spines have been independently lost in the pufferfish (tetraodon and fugu) and in medaka and platyfish. Blue boxes are scaffolds and contigs, and red boxes are exons of Ensembl gene models. Orange highlighting indicates regions of sequence alignment with the stickleback genome. Narrow orange strips indicate whether the alignment is on the same strand (solid) or the opposite strand (hollow) relative to the stickleback genome. Black tick marks indicate changes between chromosomes (or scaffolds in incompletely assembled regions). In the MSX2A region, partial alignments in fugu and platyfish correspond to msx paralogs on other chromosomes. Partial alignment in the medaka genome corresponds to an MSX2A pseudogene

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