Table 1.

M segment positions predicted to form secondary structures.

			z-score
coding region	nt positionsa	strand	average	SE
M1	115–264	–	−1.5666	0.6246
		+	−1.3270	0.8544
	145–294	–	−1.1529	0.5390
		+	−1.0313	0.6243
	175–324	–	−2.0586	0.7688
		+	−2.2007	0.7180
	205–354	–	−1.8819	0.7828
		+	−1.3244	0.5862
M2	835–984	–	−1.6945	0.7812
		+	−1.0636	0.7549
	865–1014	–	−1.9571	0.5580
		+	−2.0936	0.5514

^aNucleotide positions of the windows with z-score of -1.