Skip to main content

Table 5 Fluctuation tests and analysis of mutations under selective conditions

From: Occurrence of leu+ revertants under starvation cultures in Escherichia coli is growth-dependent

Exp.>A

Media /Mutation

Cultures with no mutants/total cultures

Number of mutants

MeanB

VarianceC

Distribu-tionD

1–1

LB leu - leu +

3/10

1,1,1,2,2,2,2

1.10

0.767

P

1–2

CM leu - leu +

0/10

16,16,18,19,21,21,24, 24,27,28

22.60

18.267

P

1–3

MM+P leu - leu +

0/10

519,552,526,612,572,634,632,619, 601,597

586.4

1774.5

P

1–4

PB leu - leu +

0/10

1,1,2,2,2,,3,3,4,5,8

3.10

4.545

P

2–1

LB leu - leu +

34/45

3,16,27,37,85,116,146,326,680,372,1284

90.64

63989

LD

2–2

CM leu - leu +

16/45

2,5,7,7,9,9,10,12,13,14,14,16,16,16,18,18,19,19,30,35,42,44, 48,50,62,75,104,126,231

23.80

1770.3

LD

2–3

MM+P leu - leu +

22/45

1,2,2,3,3,4,6,6,8,8,9,10,11,13, 15,19,23,24,25,32,55,67,103

9.98

402.20

LD

3–1

MM+P leu - leu +

14/45

1,1,1,3,3,4,4,13,21,66

4.875

193.42

LD

3–2

MM+P leu - leu +

4/24

1,1,1,2,2,3,3,3,4,4,5,5,7,7,9,12,12,19,26,50

7.333

123.19

LD

3–3

MM+P leu - leu +

11/24

1,1,1,2.3.7.9.12.14,21,29,33,38

7.125

134.03

LD

4–1

MM+L pro - pro +

14/24

1,1,1,1,3,4,9,13,15,41

3.708

80.65

LD

4–2

MM+L Pro - pro +

14/24

1,1,1,2,2,2,4,5,7,9,18,34

3.583

59.04

LD

4–3

MM+L pro - pro +

14/24

1,1,1,1,2,2,3,3,5,11,11,12, 24,42

4.958

95.26

LD

5–1

CM-lac lac - lac +

19/24

1,1, 4,23,38

2.792

78.43

LD

5–2

CM-lac lac - lac +

14/24

1,1,1,1,2,2,2,6,30,44

3.750

110.89

LD

5–3

CM-lac lac - lac +

11/14

1,1,1,2,2,2,3,3,5,6,9,14,72

5.042

214.99

LD

  1. A: Experiments in group 1 (1–1 to 1–4) , aliquots from cultures in same flasks; experiments in other groups, each cultures were independent in a little tube or in a well of 48 wells microtittle. B: Mean of mutants., here, n = number of cultures, xi = number of mutants in a culture. C: Variance of simples.D: distribution patterns were judged by the Value of X2. n = 10□ a0.95 = 3.94; n = 24, a0.95= = 13.848; n = 45 a0.95 = 30.612. If the value of X2 > a0.95, the distribution type was non-Poisson pattern; If the value of X2 < a0.95, the distribution type was Poisson pattern.