Table 2. Observed (H _O) and expected heterozygosity (H _E) estimates for seven Toll-like receptor loci genotyped among the 12 Ulva Island founders, based on amino-acid variants.

Locus1	Amino-acid variants	H O	H E	p-value2
TLR1LA	2	0.417	0.518	0.594
TLR1LB	2	0.250	0.518	0.104
TLR2B	2	0.500	0.591	0.143
TLR4	5	0.667	0.732	0.724
TLR5	3	0.500	0.489	1.000
TLR15	2	0.083	0.083	1.000
TLR21	3	0.500	0.409	1.000
Mean	2.7	0.417	0.477

¹ TLR7 is excluded from this table because locus-specific heterozygosities could not be inferred (see Results).

²Hardy-Weinberg exact test.