Table 1. Coverage and measures of polymorphism in coding and noncoding DNA of the pea aphid.

	Coveragea	θw	π	Tajima’s D
Gene
Overall	6.07	0.00476	0.00408	−0.83724
Autosomal	6.19	0.00477	0.00413	−0.82363
X	4.91	0.00459	0.00407	−0.72507
CDS
Overall	7.96	0.00432	0.00353	−0.86371
Autosomal	8.12	0.00424	0.00348	−0.86380
X	6.47	0.00432	0.00366	−0.75407
5′ UTR
Overall	7.73	0.00491	0.00415	−0.65300
Autosomal	7.88	0.00494	0.00418	−0.64950
X	6.34	0.00470	0.00406	−0.58506
3′ UTR
Overall	4.62	0.00444	0.00395	−0.49067
Autosomal	4.70	0.00440	0.00394	−0.48398
X	3.83	0.00415	0.00379	−0.39306
Introns
Overall	5.43	0.00478	0.00418	−0.74401
Autosomal	5.55	0.00483	0.00425	−0.74748
X	4.31	0.00482	0.00441	−0.57408
Upstream IGR
Overall	5.35	0.00502	0.00441	−0.82091
Autosomal	5.47	0.00504	0.00444	−0.82898
X	4.25	0.00481	0.00434	−0.72661
Downstream IGR
Overall	5.39	0.00503	0.00442	−0.82255
Autosomal	5.52	0.00508	0.00447	−0.83013
X	4.22	0.00486	0.00438	−0.71935

Only 29178 of 36990 genes were assigned to autosomes or the X. CDS, coding regions; UTR, untranslated region; IGR, intergenic region.

^aCoverage is measured as the average number of lines represented per base pair.