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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Genetic mechanisms involved in the evolution of the cephalopod camera eye revealed by transcriptomic and developmental studies

Figure 3

Differential gene expression profiles of camera eye genes at different developmental stages. The Venn diagram indicates numbers of cephalopod camera eye-specific genes for three cephalopod species (PS, the pygmy squid; S, squid; O, octopus). Each box represent the number of genes expressed at the three embryonic stages of the pygmy squid found in the developmental array. In total, 3,075 genes (2,320, 235 and 519 from PS, S, and O, respectively) were positive against pygmy squid embryonic RNA.

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