Comparison of linkage associations expected from tilapia genetic maps and observed within the 7 studied families; linkage group (LG) is taken from the previously published genetic maps (A: [48]; B: [50]; C: [49]; D: [51]); the recombination rate (Rec) is given with the associated LOD score; significant linkages (LOD > 3) are represented in bold, while suggestive linkages (LOD > 2) are underlined; see Table 1 for detail about hybrid types.