TABLE 1.

SNP frequencies in HMM PBP genes and the average core gene

Gene	Length (nt)	SNP frequencya
		SNPs	sSNPs	nsSNPs	SNPs/kb	sSNPs/kb	nsSNPs/kb	nsSNP/sSNP
Avg	932.0	238.2	105.6	132.6	255.3	109.3	146.0	1.445
pbp1a	2,166	357	185	172	164.8*	85.4*	79.4*	0.930
pbp1b	2,301	389	214	175	169.1*	93.0	76.1*	0.818
pbp2a	2,337	434	216	218	185.7*	92.4	93.3*	1.009
pbp2x	2,256	368	177	191	163.1*	78.5*	84.7*	1.079

^a*, frequencies that differ significantly from the average.