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Table 2 Branch-site tests for positive selection on lineage-specific expansion foreground branches

From: Diversification of the ant odorant receptor gene family and positive selection on candidate cuticular hydrocarbon receptors

Clades

na

d bS

lnL

2Δlc (df = 1)

P value (without Bonferroni Correction)

P value (with Bonferroni Correction)

Null model

Alternative model

9-exon1 $1 Aech & Acep

11 (6)

0.17

−7178.30

−7177.54

1.52

0.218

3.045

9-exon2 $1 Aech & Acep

20 (6)

0.11

−10419.64

−10408.81

21.65

3.27E-6**

4.57E-5**

$2 Pbar

20 (5)

0.11

−10426.11

−10422.62

6.98

8.26E-3*

0.116

9-exon3 $1 Aech & Acep

34 (32)

0.07

−12015.98

−11995.80

40.36

2.11E-10**

2.96E-09**

9-exon4 $1 Aech & Acep

23 (14)

0.11

−10103.70

−10099.98

7.43

6.42E-3*

0.089

A1 $1 Hsal

10 (5)

0.21

−8010.95

−8010.95

3.95

1

1

H1 $1 Aech & Acep

8 (6)

0.12

−3976.99

−3976.99

0.00

1

1

L1 $1 Aech & Acep

15 (7)

0.16

−8415.00

−8415.00

0.00

1

1

L2 $1 Aech & Acep

11 (9)

0.12

−5629.05

−5629.05

0.00

1

1

L3 $1 Aech & Acep

24 (20)

0.10

−11115.08

−11115.08

0.00

1

1

U1 $1 Aech & Acep

43 (16)

0.13

−22254.33

−22254.33

0.00

1

1

$2 Cflo

43 (6)

0.17

−22277.77

−22277.77

0.64

1

1

$3 Lhum

43 (10)

0.11

−22256.65

−22256.33

1.52

0.4233

1

  1. aNumber of sequences in the data set with number of sequences in the foreground branch in the parentheses
  2. bMean dS for all branches estimated under M0 model
  3. cLog Likelihood ratios; 2x(lnLH1 − lnLH0)
  4. ** Significant at the 0.1 % level
  5. * Significant at the 5 % level