specification of segmental identity, antennal segment

The specification of the characteristic structures of the antennal segment following establishment of segment boundaries. Identity is considered to be the aggregate of characteristics by which a structure is recognized.

specification of segmental identity, thorax

The specification of the characteristic structures of the thoracic segments following establishment of segment boundaries. Identity is considered to be the aggregate of characteristics by which a structure is recognized.

specification of segmental identity, abdomen

The specification of the characteristic structures of the abdominal segments following establishment of segment boundaries. Identity is considered to be the aggregate of characteristics by which a structure is recognized.

The division of embryonic segments into compartments.

The process giving rise to specification of cell identity in the anterior compartments of the segmented embryo.

The process involved in the specification of cell identity in the posterior compartments of the segmented embryo.

Catalysis of the hydrolysis of ATP to unwind the DNA helix at the replication fork, allowing the resulting single strands to be copied.

The process that results in the patterns of cell differentiation that will arise in an organism.

Formation of a ventral indentation (furrow) from the blastoderm epithelium, which is internalized to form a tube in the interior of the embryo, marking the start of gastrulation.

Formation of a cup-shaped invagination at the posterior end of the embryo, bringing the posterior midgut and hindgut primordia into the interior.

Internalization of the anterior midgut into the interior of the embryo.

Formation of a partial necklace of inturning tissue on the lateral sides of the embryo, along the dorsal-ventral axis. This furrow demarcates head from thorax in the developing protostome.

Elongation of the germ band on the ventral side of the embryo, accompanied by a halving in width. The elongation process pushes the posterior midgut invagination closed and compresses the amnioserosa further.