Fig. 3. Expression of Tc'Kr. Wild type (A,C,E) and Tc'hb^pRNAi embryos (B,D,F). (A,B) Blastoderm stage embryos. Tc'Kr is expressed at the posterior end in wild-type embryos (A) and this expression is strongly reduced (and often absent) in Tc'hb^pRNAi embryos (B). (C,D) Early germband stages. Tc'Kr is expressed in a central domain in wild-type embryos (C) and this expression is absent in Tc'hb^pRNAi embryos (D). (E,F) Extended germband stages. Tc'Kr is secondarily expressed in segmental stripes in wild-type embryos (E), an expression aspect that is not changed in Tc'hb^pRNAi embryos (F), but these develop fewer segments (compare with Fig. 1).