Fig. 1

Decay of average linkage disequilibrium across chromosomes measured as r2 against physical distance. Physical distance in terms of fragment length is indicated in Mb for the species for which a physical map is available; i.e. turbot (left panels) and seabass (right panels). Three different distance categories are represented: a from 0.0 to 0.5 Mb; b from 0.5 to 5 Mb; c from 5 to 20 Mb