Fig. 2.

Mapping of the F gene on chromosome 6. (A) Rough mapping using 58 individuals. Small horizontal lines on the vertical bars of chromosome 6 denote the positions of crossover events, showing the name of the SNP marker and the number of recombinants. (B) Fine mapping using 789 individuals. Nine individuals that were considered to have been misjudged for their cocoon colors were omitted from the number of recombinants (see Experimental Procedures for details). (C) Physical map of chromosome 6 near the F locus harboring the predicted F gene. Vertical arrows indicate the orientation and relative size of the putative genes predicted by the China gene model in the silkworm genome database KAIKObase (20). Sequence of BAC clone 055_A23 was determined in this study to fill the gap between Bm_scaf111 and Bm_scaf78. No sequences homologous to Cameo2 were found in 055_A23. SCRB11–15 were named in previous reports (17, 49).