substage_of
immediately_preceded_by
immediately preceded by
starts_at_end_of
immediately preceded by
late extended germ band stage
developmental stage
embryonic stage 10
embryonic stage 11
FlyBase_development_CV
Temporal ordering number - 310.
Stage 11 begins with the invagination of the tracheal placodes. Para-segmental furrow form and segment boundary furrows become deep folds. Within the head, gnathal protuberances become apparent. The end of this stage is signaled by the appearance of a distinct cleft at the posterior pole of the embryo, which becomes detached from the vitelline membrane. This marks the beginning of germ-band retraction. Duration at 25 degrees C: approximately 120 minutes (320-440 minutes after egg laying).
FBdv:00005325
early extended germ band stage