Table 1.

Distribution of the wnt Genes in Metazoans.

	Cnidaria	Vertebrata	Ecdysozoa	Lophotrochozoa
Gene	Nematostella vectensis	Homo sapiens	Tribolium castaneum° other *	Mollusk, Lottia gigantea	Annelid, Helobdella robusta	Annelid, Capitella teleta
wntA	1 (24)		1*° (29)	1 (24)		1 (22)
wnt1	1 (23)	1 (23)	1*° (25)	1 (24)	1 (20)	1 (24)
wnt2	1 (24)	2 (24, 26)	1* (26)	1 (24)	1 (13)	1 (24)
wnt3	1 (23)	2 (25, 24)
wnt4	1 (24)	1 (25)	1* (26)	1 (24)	1 (24)	1 (26)
wnt5	1 (25)	2 (24, 24)	1*° (24)	1 (24)	2 (23, 24)	1 (21)
wnt6	1 (17)	1 (25)	1*° (24)	1 (24)	1 (20)	1 (26)
wnt7	1 (24)	2 (25, 25)	1*° (25)	1 (24)	1 (27)	1 (24)
wnt8	2 (21, 23)	2 (25)	1*° (23)			1 (24)
wnt9		2 (24, 25)	1*° (18)	1 (25)		1 (24)
wnt10	1 (24)	2 (24, 25)	1*° (24)	1 (24)	1 (24)	1 (24)
wnt11	1 (25)	1 (26)	1*° (22)	1 (24)	3 (24, 25, 24)	1 (24)
wnt16	1 (20)	1 (25)	1* (24)	1 (24)	2 (24, 21)	1 (25)

NOTE.—Numbers in parenthesis indicate the number of cysteines in that gene. In the Ecdysozoa column, (°) indicates genes present in T. castaneum; (*) indicates genes present in other species.