Table 2. Mutations occurring along the ZAL2 and ZAL2^m lineages.

	All	Nonsynon	Synon	Conserved	Neutral
ZAL2	78	1	6	31	47
ZAL2m	98	5	8	36	62
P-valuea	0.13	0.102	0.593	0.54	0.15

This test includes the subset of fixed differences in which ancestral state could be unambiguously inferred using junco sequence. Conserved category includes all single-nucleotide polymorphisms (SNPs) within most conserved elements and neutral category includes all SNPs outside most conserved elements.

^aP-values were calculated using Tajima's relative rate test (Tajima, 1993).