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Table 3 Comparison of dN, dS, and dN/dS estimates in the coding regions of SARS-CoV-2 without singleton between two episodes

From: The origin and underlying driving forces of the SARS-CoV-2 outbreak

Gene

Episode I (N = 57) (2019/12/24–2020/1/21)

Episode II (N = 79) (2020/1/22–2020/2/23)

Episode I + II (2019/12/24–2020/2/23)

 

dN ×  104

dS × 104

dN × 104

dS × 104

dN X 104

dS X 104

dN/dS

dN/dS

dN/dS

All

0.34

1.70

0.78

1.98

0.61

1.87

0.20

0.39

0.32

orf1a

0.10

1.46

0.37

2.15

0.26

1.85

0.07

0.17

0.14

orf1b

0.06

0.81

0.08

1.60

0.07

1.29

0.07

0.05

0.05

spike

0.23

2.49

0.64

1.82

0.48

2.10

0.09

0.35

0.23

orf3

0.00

0.00

5.30

(1.98)*

3.42

(1.87)*

0.00

2.68

1.83

envelope

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

matrix

0.00

4.60

0.97

3.37

0.57

3.86

0.00

0.29

0.15

orf6

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

orf7

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

orf8

16.26

(1.70)*

15.84

(1.98)*

15.90

(1.87)*

9.57

8.02

8.51

nucleocapsid

1.16

7.31

2.98

4.26

2.25

5.61

0.16

0.70

0.40

  1. *No synonymous mutation in this region was observed. The genome-wide dS value was used here. As the sequence EPI_ISL_411929 from South Korea did not have sampling date, it was excluded from this analysis