##gff-version 3
GeneX_reference	synthetic	gene	1	720	.	+	.	ID=GeneX;Name=GeneX
GeneX_reference	synthetic	mRNA	1	720	.	+	.	ID=GeneX.t1;Parent=GeneX;Name=GeneX.t1
GeneX_reference	synthetic	CDS	1	720	.	+	0	ID=GeneX.cds1;Parent=GeneX.t1