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Fig. 7. Hb acts independently of other floral asymmetry genes. Comparisons of floral asymmetry. (A) Wild type. (B) hb single mutant. (C) phan single mutant. (D) rad and rad hb mutants. (E) dich and dich hb mutants, upper petal lobes of dich hb double mutants are more symmetrical than either dich or hb single mutant. (F) cyc and cyc hb mutants. (G) div/+, div/+ hb, div/div, and div/div hb mutants – div mutations are semi-dominant.