Fig. 3

Dynamics of identity transcription factor transcription during muscle development. (A–E’) col ^LCRM -moeGFP, (G–K’) S59-mcd8GFP and (M–Q’) Kr ^GMR80H11 -Gal4;UAS-mcd8GFP embryos stained for nascent col (A–E’), S59 (G–K’) or Kr (M–Q’) transcripts (red) and GFP (green) to visualise muscle shape, and either Col (A–E’), S59 (G–K’) or Kr (M–Q’) (blue). (A’–E’, G’–K’, M’–Q’) red channel only, with dotted grey lines outlining muscle shape. Kr is transcribed in a single nucleus from stage 12 to late stage 14, in all Kr-expressing muscles. (F, L, R) Schematic view of the Col⁺, S59⁺ and Kr⁺ muscles colour coded as in Fig. 1A. (S–U) Box plots showing the relative numbers of nuclei and col transcription dots in DA3 (S), S59 dots in DT1 and VA2 (T), and Kr dots in LL1 and VA2 (U)