Table 2. Mean sequence divergence in offspring measured as nucleotide and amino-acid distance and its variance for the whole exon 2 sequence and for PBR sites only.

	DAA			DAB
	Meanexp	Meanobs	P	Meanexp	Meanobs	P
Nucleotide distance	0.0418	0.0421	0.48	0.0559	0.0558	0.82
Amino-acid distance	0.0784	0.0789	0.55	0.1177	0.1174	0.78
Nucleotide variance	5.10E−4	5.17E−4	0.55	9.64E−4	9.66E−4	0.91
Amino-acid variance	1.88E−3	1.92E−3	0.37	4.10E−3	4.10E−3	0.97
PBR nucleotide distance	0.0418	0.0421	0.47	0.1325	0.1323	0.92
PBR amino-acid distance	0.0784	0.0789	0.53	0.3001	0.2997	0.89
PBR nucleotide variance	5.09E−4	5.17E−4	0.55	5.26E−3	5.25E−3	0.95
PBR amino-acid variance	1.88E−3	1.92E−3	0.35	0.0290	0.0285	0.50

Abbreviations: Mean_exp, expected mean value; Mean_obs, observed mean value; PBR, peptide-binding region.

Expected mean values were obtained by Monte Carlo simulations with 10 000 iterations. P indicates P-values before correction for false discovery rate (Taborsky, 1998).