Figure 6.
Similar localization of chromosome 21 dorsal bone QTL and chromosome 4 ventral bone QTL in two crosses. The chromosome 21 QTL was mapped in fish from the 40 dpf, 80 dpf and adult time points in each cross, while the chromosome 4 QTL was mapped in adults only. The significance threshold of α = 0.05, calculated based on 10 000 permutations of the phenotype data, is shown as a solid grey line. The 0.01 significance threshold is shown as a dashed line. The 0.001 significance thresholds were 4.20, 3.92, 4.10 and 4.21 for panels (a)–(d), respectively. Genetic markers (black diamonds) from left to right: (a) chr21_0049, Stn487, Stn423, Stn489, Stn491, Stn424, Stn425, chr21_0991, chr21_1170; (b) chr21_0049, chr21_0163, Stn487, Stn423, Stn489, Stn491, Stn424, Stn425, chr21_0997, chr21_1136; (c) Stn38, Stn42, Stn382, Stn46, Stn266, Stn253, chr4_280; (d) Stn38, Stn40, Gac4147, Stn382, Stn253, chr4_280. Marker Stn489 is asterisked for chromosome 21 and marker Stn382 is asterisked for chromosome 4 (see the electronic supplementary material, table S3 for a linkage map of each cross).