Knockout of crustacean leg patterning genes suggests that insect wings and body walls evolved from ancient leg segments

CRISPR knockout and expression comparisons in Parhyale hawaiensis and insects support serial homology between proximal leg segments, lateral body wall and wing-related structures, but do not directly observe the first insect wing or identify one fossil transition.

The Insect flight evidence route navigation entity is source-linked only to the named specimen, dataset and analysis dossiers already cited by its range ledger. Its displayed span is a study-bounded route or sample envelope, not a biological taxon, ancestor sequence, global FAD/LAD or exact origin interval.

This entry represents modern Parhyale hawaiensis leg-patterning knockout experiments compared with published insect phenotypes. Its 0 Ma marker denotes living experimental material, not a fossil occurrence, the age of insect wing origins or the species's complete temporal range.