Table 1.

Predicted characteristics of genomic islands of divergence under different evolutionary models

Model	F ST	d XY	Polymorphism within populations	Local recombination rate	More islands in sympatry
Reproductive isolation, divergence with gene flow [3, 8, 13]	Elevated	Elevated	No prediction	No prediction	Yes
Local adaptation, divergence without gene flow [3]	Elevated	Not elevated	Reduced	No prediction	No
Recurrent selective sweeps within populations [2, 4–6, 11]	Elevated	Reduced	Reduced	Reduced	No
Background selection within populations [2, 4–6, 11]	Elevated	Reduced	Reduced	Reduced	No
Sorting of ancestral balanced polymorphisms [3, 7, 13]	Elevated	Elevated	No prediction	Unchanged or reduced	No