Table 1. Quantitation of numbers of mutant embryos showing residual marker gene expression.

Marker	Genotype	24 hpf	30 hpf	36 hpf	42 hpf	48 hpf	54 hpf	60 hpf
silva	sox10	10/10	12/12	14/14	14/14	18/20	12/16	0/11
	mitfa	2/6	5/12	0/7	n.d.	n.d.	n.d.	n.d.
dct	sox10	14/14	12/12	14/15	8/8	8/16	1/11	0/12
	mitfa	0/6	5/12	0/10	n.d.	n.d.	n.d.	n.d.
tyrosinase	sox10	11/11	17/17	10/11	15/17	5/13	3/16	0/11
	mitfa	6/6	10/10	0/8	n.d.	n.d.	n.d.	n.d.
tyrp1b	sox10	12/12	8/8	7/9	7/7	2/6	0/1	0/8
	mitfa	6/9	0/11	0/11	n.d.	n.d.	n.d.	n.d.

Number of homozygous mutant embryos showing detectable expression by in situ hybridisation of named marker gene is given out of total number of mutants examined. Font reflects percentage with residual expression: 90–100%; 0–89%; n.d., not determined.