Table 1

Data set characteristics

Taxon

Gene(s)

Species

Alignment length*

Partition

Saturatio Iss n

Iss.c S

P

Iss.c A

P


Chilopoda

18S

61

2576 (1822)

stems

0.062

0.715

0.000

0.398

0.000

loops

0.806

0.710

0.426

0.390

0.001

Hexapoda

18S+28S

94

9217 (4413)

stems

0.181

0.765

0.000

0.476

0.000

loops

0.549

0.758

0.000

0.465

0.101

Echinodermata

18S

144

2045 (1706)

stems

0.129

0.721

0.000

0.406

0.000

loops

0.457

0.722

0.000

0.408

0.418

Heterobranchia

28S

50

3609 (2388)

stems

0.033

0.652

0.000

0.302

0.000

loops

0.473

0.649

0.491

0.297

0.492

Tunicata

18S

88

1990 (1960)

stems

0.239

0.729

0.000

0.419

0.000

loops

0.444

0.741

0.000

0.438

0.898

Primates

12S+16S

54

1788 (1362)

stems

0.115

0.743

0.000

0.441

0.000

loops

0.327

0.762

0.000

0.471

0.000

Mammalia

12S+16S

126

3102 (1875)

stems

0.168

0.775

0.000

0.492

0.000

loops

0.393

0.764

0.000

0.474

0.027

Anisoptera

12S+16S+28S

108

5968 (5239)

stems

0.043

0.756

0.000

0.460

0.000

loops

0.059

0.733

0.000

0.425

0.000


Characteristics of the applied test data sets including the results of the test for substitution saturation in loop and stem partitions. Iss: estimated index of substitution saturation for the data set. Iss.c S and Iss.c A: critical values for the index of substitution saturation (ISS) if the true tree is symmetrical (S) or asymmetrical (A). Iss > Iss.c indicates saturation.

*original (ambiguous positions excluded)

Letsch and Kjer BMC Evolutionary Biology 2011 11:146   doi:10.1186/1471-2148-11-146

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