Figure 3: Linkage map showing the respective locations of HCA1 and HCA2 on rice chromosomes 12 and 11. (a) Linkage map of HCA1 on rice chromosome 12 constructed from an F4 line derived from the cross between J-147 and IR24 (). (b) RFLP framework maps of rice chromosomes 12 and 11 referred from Harushima et al. . Duplicated genomic regions identified by Wu et al.  are enclosed by dotted red squares. (c) Linkage map of HCA2 on rice chromosome 11constructed from another F4 line derived from the cross between J-147 and IR24 (). DNA markers which are located near each other on Nipponbare pseudomolecules are connected with dotted lines. *, **, and *** respectively denote that the gene segregation was significantly deviated from the expected ratio (1 : 2 : 1 or 3 : 1) at 0.05, 0.01, and 0.001 levels.