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Table 3 Effect of hypoxia and hyperoxia selection on recombination rates in 16 regions of the D. melanogaster genome

From: Experimental evolution of recombination and crossover interference in Drosophila caused by directional selection for stress-related traits

 

Control

Hypoxia

Control vs. Hypoxia

Hyperoxia

Control vs. Hyperoxia

Interval

rf (%)

χ 2a

rf (%)

χ 2a

δ rf (%)b

χ 2 c

P d

rf (%)

χ 2a

δ rf (%)b

χ 2c

P d

X chromosome

y-cv

13.15 ± 0.71

0.10

17.46 ± 0.80

6.31e

32.78

16.21

4.6 × 10–4

15.97 ± 0.77

2.37

21.44

7.21

4.1 × 10–2

cv-v

18.96 ± 0.83

0.57

26.29 ± 0.93

3.40

38.66

34.77

5.1 × 10–8

27.25 ± 0.94

1.99

43.72

43.43

2.1 × 10–9

v-f

22.57 ± 0.88

0.14

28.98 ± 0.96

2.04

28.40

24.30

9.8 × 10–6

27.52 ± 0.94

1.94

21.93

14.69

9.6 × 10–4

2 L chromosome

net-dp

12.20 ± 0.69

3.41

17.01 ± 0.79

1.79

39.43

21.07

4.2 × 10–5

14.50 ± 0.74

0.91

18.85

5.19

0.12

dp-b

30.48 ± 0.97

0.42

37.20 ± 1.02

0.08

22.85

22.05

2.8 × 10–5

36.16 ± 1.01

1.04

18.64

16.42

4.5 × 10–4

b-pk

6.65 ± 0.53

2.63

7.99 ± 0.57

0.14

20.15

2.98

0.38

6.65 ± 0.52

2.73

0.00

0.00

1

pk-cn

2.19 ± 0.31

0.71

2.12 ± 0.30

0.41

−3.20

0.03

1

1.95 ± 0.29

2.20

−10.96

0.32

1

2R chromosome

cn-kn

9.99 ± 0.63

0.37

10.38 ± 0.64

0.46

3.90

0.29

1

10.01 ± 0.63

0.89

0.20

0.02

1

kn-c

2.02 ± 0.30

1.69

1.73 ± 0.27

3.84

14.36

0.52

1

2.40 ± 0.32

1.02

18.81

0.77

1

c-px

24.67 ± 0.91

5.88

22.21 ± 0.88

0.54

−9.97

3.79

0.26

23.42 ± 0.89

3.76

−5.07

0.95

1

px-sp

7.58 ± 0.56

0.51

7.01 ± 0.54

2.73

−7.52

0.55

1

7.71 ± 0.56

1.82

1.72

0.03

1

3rd chromosome

ru-h

14.89 ± 0.75

2.94

14.84 ± 0.75

2.89

−0.34

0.01

1

14.39 ± 0.74

0.40

−3.36

0.22

1

h-th

11.82 ± 0.68

5.27

13.09 ± 0.71

3.34

10.74

1.67

0.80

11.66 ± 0.68

0.79

−1.35

0.03

1

th-cu

5.24 ± 0.47

4.52

6.58 ± 0.52

4.72

25.57

3.59

0.28

5.48 ± 0.48

1.82

4.58

0.13

1

cu-sr

5.98 ± 0.50

1.69

8.79 ± 0.60

1.40

46.99

13.08

1.8 × 10–3

6.70 ± 0.53

0.38

12.04

1.23

0.96

sr-e

4.50 ± 0.44

0.84

7.06 ± 0.54

0.28

56.89

13.55

1.6 × 10–3

4.75 ± 0.45

0.14

5.56

0.16

1

  1. For each cross, we scored 750 individuals of each line (3 lines each in control, hypoxia and hyperoxia variant) i.e., 6750 per cross. Thus, a total 27,000 flies were scored for recombination analysis in X chromosome, 2L arm, 2R arm and 3 chromosome in hypxoxia-hyperoxia experiment.
  2. a χ 2test for between-lines heterogeneity within either control of selection variants (df = 2)
  3. bδ rf (%), relative change of rf in selection variant compared to control variant
  4. c χ 2 test for significance between rf values in selection versus control (df = 1), see Methods
  5. dFalse discovery rate corrected P values (two-tailed test) based on χ 2c are present to take into account the effect of multiple comparisons
  6. e P <0.05; for more details of this table, see Methods and Additional file 3
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