Table 1. Comparison of peak expression times of selected core clock genes between Nematostella and Acropora millepora. All experiments were conducted using a 12 : 12 h light : dark cycle. Peak expression indicated as Zeitgeber time (ZT), which in this case indicates the number of hours after the lights were turned on. Data from qPCR^15,19, Illumina (this study), and microarray²⁰.

Nematostella vectensis				Acropora millepora
Gene	Accession numbers	Reitzel et al. 2010	This study	Accession numbers	Levy et al. 2011	Brady et al. 2011
Clock	JGI: 160110 XP_001639742	ZT11	ZT9-13	None/Unknown	NA	ZT14
NvCry1a	JGI: 168581 XP_001631029	ZT4-ZT11	ZT5	CRYb (DY585180; SeqIndex10300; probe A031-G12)	ZT5	NA
NvCry1b	JGI: 16062 XP_001632849	ZT7	ZT5-9	CRY2 (EF202590; SeqIndex 10301)	NA	ZT2
NvCry2	JGI: 194898 XP_001623146	ZT0-4	ZT21	CRY1 (EF202589; SeqIndex 10302, probes C018-C3, D027-B12)	ZT5	ZT6