Table 1 Number of replicates and mean fitnesses relative to ancestor at each time point and location.

From: Reducing the ionizing radiation background does not significantly affect the evolution of Escherichia coli populations over 500 generations

Environment

Gen

n

Fitness

p(F > F(0))a

LPC

0

6

1.00 ± 0.05

—

200

8

1.02 ± 0.08

0.19

500

6

1.12 ± 0.06

1.2 × 10−3

LSM

0

6

0.98 ± 0.05

—

200

9

1.02 ± 0.05

0.14

500

9

1.09 ± 0.06

8.7 × 10−4

  1. aThis is the likelihood that the fitness measured is different to that at 0 generations.
Back to article page