In silico analyses of mitochondrial ORFans in freshwater mussels (Bivalvia: Unionoida) provide a framework for future studies of their origin and function

Table 3 p-distances (p-D) and standard error (SE) values of mitochondrial H-orfs and cox1 in hermaphroditic freshwater mussels

Species	Gene (N)	Nucleotide		Amino acid		p
Species	Gene (N)	p-D	SE	p-D	SE	p
Utterbackia imbecillis	H-orf (7)	0.070	0.008	0.181	0.022	1.000
Utterbackia imbecillis	cox1 (2)	0.000	0.000	0.000	0.000	1.000
Margaritifera falcata	H-orf (4)	0.003	0.002	0.004	0.004	1.000
Margaritifera falcata	cox1 (2)	0.000	0.000	0.000	0.000	1.000
Lasmigona compressa	H-orf (2)	0.029	0.007	0.065	0.017	1.000
Lasmigona compressa	cox1 (2)	0.000	0.000	0.000	0.000	1.000
Lasmigona subviridis	H-orf (2)	0.016	0.005	0.021	0.010	1.000

Note: N number of sequences used. Multiple cox1 sequences were not available for L. subviridis. The probability of rejecting the null hypothesis of strict-neutrality (d _N = d _S) in favor of the alternative hypothesis (d _N > d _S) (in the p column) is shown. d _S and d _N are the numbers of synonymous and nonsynonymous substitutions per site, respectively

ISSN: 1471-2164