Table 13-1: Examples of Drosophila A–P Axis Genes That Contribute to Pattern Formation

Gene symbol	Gene Name	Protein function	Role(s) in early development
hb-z	hunchback-zygotic	Transcription factor—zinc-finger protein	Gap gene
Kr	Krüppel	Transcription factor—zinc-finger protein	Gap gene
kni	knirps	Transcription factor—steroid receptor-type protein	Gap gene
eve	even-skipped	Transcription factor—homeodomain protein	Pair-rule gene
ftz	fushi tarazu	Transcription factor—homeodomain protein	Pair-rule gene
opa	odd-paired	Transcription factor—zinc-finger protein	Pair-rule gene
prd	paired	Transcription factor—PHOX protein	Pair-rule gene
en	engrailed	Transcription factor—homeodomain protein	Segment-polarity gene
wg	wingless	Signaling WG protein	Segment-polarity gene
hh	hedgehog	Signaling HH protein	Segment-polarity gene
ptc	patched	Transmembrane protein	Segment-polarity gene
lab	labial	Transcription factor—homeodomain protein	Segment-identity gene
Dfd	Deformed	Transcription factor—homeodomain protein	Segment-identity gene
Antp	Antennapedia	Transcription factor—homeodomain protein	Segment-identity gene
Ubx	Ultrabithorax	Transcription factor—homeodomain protein	Segment-identity gene