631190-13-10P AID: 2498 | 25/08/2015
Engrailed is a homeodomain class of transcription factor that plays a role in embryological development. It works in cooperation with the Hox genes.
Even-skipped is transcriptional repressor protein that represses number of genes, including engrailed. It plays a role in segmentation.
Hunchback is a part of gap genes that is essential for the establishment of an anterior-posterior positioning in drosophila. Hunchback has a role in trunk development.
Antennapedia is homeotic gene that regulates the formation of legs during drosophila development.
All of these are proteins and specific genes that control the embryological development of drosophila. Some of them act as transcription activators, and some of them are transcription repressors, while others allow the binding of specific transcriptional factors.