Skip to main content
Figure 4 | EvoDevo

Figure 4

From: The Hox genes Ultrabithorax and abdominal-A specify three different types of abdominal appendage in the springtail Orchesella cincta (Collembola)

Figure 4

Oc-abd-A inhibits the ventral groove. (A) In wildtype (and control) embryos, the ventral groove (white arrows) is a channel in the cuticle that runs on the ventral side of the thorax from the head to the tip of the collophore (c) on A1 and never extends behind. (B) In the Oc-Ubx(RNAi) larvae, which have a pair of walking legs on A1 instead of the collophore, the ventral groove (white arrows) terminates between the homeotic walking legs (asterisk). (C) In the Oc-abd-A(RNAi) larvae, the ventral groove (white arrows) leads to the homeotic collophore on A3 and even extends behind. A1 and A3 mark the first and the third abdominal segments, respectively. c, collophore; f, furca; r, retinaculum; wl, walking leg. The homeotic appendages are labelled in yellow. Scale bars: (A) 100 μm; (B) 50 μm; (C) 20 μm.

Back to article page

EvoDevo

ISSN: 2041-9139