Table 1.

Parameters of the model

Parameter	Definition
N	Number of individuals in the population
Z	Probability to reproduce by self-fertilization
w	Fitness of an individual
n	Number of TE copies in the genome
s i	Effect of insertion i on fitness
μ s	Average effect of TE insertions on fitness
σ s	Standard deviation of the effect on fitness
Ps > 0	Proportion of TE insertions that improve the fitness
u	Replicative transposition rate
v	Deletion rate
a i	Activity of a copy i (ability to produce the transposition machinery)
m	Mutation rate (toward a less active copy)
σ m	Standard deviation of the effect of a mutation on activity