DEV004911 Supplementary Material

Files in this Data Supplement:

• Movie 1 -

  Movie 1. GBE in a wild-type embryo. Movement of the posterior of the germ band as it comes into view during extension (fast and slow phases). Note how cell divisions tend to be longitudinally oriented during the fast phase (anterior is at the lower the left; ten frames per second). This and all other movies are reconstructed from the projection of ten confocal slices.

• Movie 2 -

  Movie 2. GBE in a string embryo. Time-lapse movie showing GBE in a string mutant embryo. Note that elongation is slower than in wild type (the posterior end of the germ band comes into view at the upper left; ten frames per second).

• Movie 3 -

  Movie 3. GBE in an eve mutant embryo. Note the reduced number of longitudinal divisions (anterior is at the lower left; ten frames per second).

• Movie 4 -

  Movie 4. Lack of elongation in an embryo laid by a bicoid nanos torso-like female. Time-lapse movie showing cell divisions at the posterior of an embryo laid by a bicoid nanos torso-like female. Note the tissue deformation caused by cell divisions (posterior is right; five frames per second).

• Movie 5 -

  Movie 5. GBE in a dsh-deficient embryo. Time-lapse movie showing GBE in an embryo laid by a dsh¹/dsh^v26 female. Note that elongation is similar to that in wild type (the posterior end of the germ band comes into view at the upper right; ten frames per second).