Table 3. Synonymous Sequence Divergence (d _S) between Alleles of Five Genes on the Mating-Type Chromosome in Two Lineages of N. tetrasperma.

Locus	Sequence compared (bp)	Strains
		Lineage 1			Lineage 2
		P5811			P505
		P556			P510
		P2361			P4460
		AT-aT	AT-Nc	aT-Nc	AT-aT	AT-Nc	aT-Nc
upr-1	806	0.0612-0.0673	0.044	0.0442-0.0503	0.022	0.056	0.050
eth-1	863	0.029	0.059	0.049	0.024	0.049	0.065
lys-4	607	0.074	0.029	0.044	0.021	0.021	0.014
ad-9	544	0.082	0.108	0.091	0	0.108	0.108
lys-3	731	0.039	0.051	0.022	0	0.028	0.028

¹All strains follow Fungal Genetics Stock Center (FGSC) numbers as in Table 1.

²Strain P2361.

³Strains P581 and P556. Comparisons between mat A and mat a component strains originating from six heterokaryotic N. tetrasperma strains (A^T-a^T), belonging to two phylogenetic lineages [20], and between each of the mating-type strains and the N. crassa genome sequence (A^T-Nc; a^T-Nc). Genes are listed from left to right on the chromosome based on gene order in N. crassa.