Table 1.

5S rDNA polymorphism by species within types

	region	n	s	h	π
A type	5S rDNA		69	34	0.018
P. pollicipes	120 pb	35	5	5	0.004
	nts		64	31	0.021
B type	5S rDNA		11	2	0.036
P. pollicipes	120 pb	3	1	2	0.006
	nts		10	2	0.080
C type	5S rDNA		23	2	0.054
P. pollicipes	120 pb	3	6	2	0.033
	nts		17	2	0.069
D type	5S rDNA		4	2	0.020
P. elegans	120 pb	2	4	2	0.033
	nts		0	1	0.000
E type	5S rDNA		16	3	0.025
P. pollicipes	120 pb	4	2	2	0.008
	nts		14	3	0.034
E type	5S rDNA		66	37	0.037
P. elegans	120 pb	43	9	9	0.015
	nts		57	29	0.048
F type	5S rDNA		7	4	0.009
P. pollicipes	120 pb	4	2	2	0.011
	nts		5	3	0.008
F type	5S rDNA		35	1	0.017
P. polymerus	120 pb	17	5	5	0.009
	nts		3	14	0.020
G type	5S rDNA		2	2	0.002
P. polymerus	120 pb	3	1	2	0.006
	nts		1	2	0.001

n: sample size; s: number of segregating (polymorphic) sites; h: number of haplotypes; π: nucleotide diversity