Movie 1

Live imaging of early wildtype embryo
12 hours Time-lapse fluorescence recording of a Tribolium embryo expressing nuclearlocalized GFP under a ubiquitous promoter (transgenic line EFA-nGFP). Stacks were recorded every 12 minutes at 10x magnification and 20°C. After synchronous cell divisions, the embryonic anlagen condense and give rise to germ-rudiment that progressively becomes covered by the extending serosa. The germ-band extends posteriorly, bending around the posterior pole. Anterior to the left.