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The heptamer is active in the inverted orientation within the ade6 gene. (A) Inversion at the site of M26 (Inversion; ade6-3005). (B) Inverted heptamer 67 bp downstream of M26 (+67 Inversion; ade6-3008). (C) Inverted heptamer 1079 bp downstream of M26 (+1079 Inversion; ade6-3011). See Fig. 2 legend for explanation of symbols.
