The bicoid protein determines position in the Drosophila embryo in a concentration-dependent manner.
Driever and Nusslein-Volhard, 1988, Cell 54(2 Suppl): 95--104 [
FBrf0047672]
A gradient of bicoid protein in Drosophila embryos.
Driever and Nusslein-Volhard, 1988, Cell 54(2): 83--93 [
FBrf0047668]