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Figure 3 | EvoDevo

Figure 3

From: Comparative gene expression supports the origin of the incisor and molar process from a single endite in the mandible of the red flour beetle Tribolium castaneum

Figure 3

Tc-prd marks the developing endites in the embryonic gnathal appendages . All views are ventral with anterior to the left unless otherwise indicated. (A) Germ band extending stage embryo after formation of the limb buds, which are marked by Tc-Dll expression. Faint Tc-prd expression is visible in the maxilla (arrow). (B) Later germ band extending stage embryo. Tc-prd expression is now visible in the mandible (arrowhead). Expression of Tc-Dll and Tc-prd is present the maxillary lacinia endite (arrow). (C) Fully germ band extended stage embryo. The endites of the mandible, maxilla and labial appendages are marked by Tc-prd expression. Tc-Dll expression is present in the lacinia endite lobe (arrow) but absent from the galea (asterisk). The mandible has one domain of Tc-prd expression which is significantly larger than either of the maxilla endite expression domains. (D) Germ band retracting stage embryo, Expression of Tc-prd and Tc-Dll is maintained in the same domains as in C.

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