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Figure 6 | Frontiers in Zoology

Figure 6

From: Duplicated Hox genes in the spider Cupiennius salei

Figure 6

Schematic representation of the segmental expression patterns of the Hox genes in the spider Cupiennius salei. The segmental organization of the spider and the expression domains of engrailed (en; dark blue) and wingless (wg; bright blue) are shown at the top [see Ref. 31], below are the expression domains of the various Hox genes. Data from: this paper, Refs. [15, 17-19]. Note that the posterior expression domain of the anterior Hox genes (lab, pb, Hox3, Dfd, Scr, ftz) is in the segment of the fourth walking leg and corresponds to the tagma boundary between prosoma and opisthosoma. The expression of the posterior Hox genes (Antp, Ubx, abdA, AbdB) expands to the very posterior end of the embryo. Abbreviations: Oc: ocular; Ch: cheliceral segment; Pp: pedipalpal segment; L1-L4: walking leg segment 1–4; O1-O12: opisthosomal segment 1–12.

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