Table 1 Summary of parameters used in simulations of noncoding sequence evolution.

Sequence length

10 Kb

D. mel

this work (Fig. 1)

AT : GC

60 : 40

Drosophila spp.

this work, [31, 55]

Transition / Transversion Bias

2

Drosophila spp.

[25, 56]

Substitution model

HKY85

-

[54]

Point substitutions : Indels

10 : 1

Drosophila spp.

[22, 23, 25]

Indel spectrum

-

D. mel

[57]

Median constrained block length

18 bp

D. mel vs. D. vir

[25]

Mean density of constrained blocks

0.2

D. mel vs. D. vir

[25]