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Coding joints. (A) Sequences of coding joints from randomly selected inversions (Inv) and deletions (CJΔ). Underlined nucleotides can be assigned to either end. (B) Variant target recognition of a CA repeat. As seen in analysis of coding joints in panel A, as well as of signal joints (not shown), a CA repeat is recognized in alternative frames displaced by 2 bp. Heptamer and nonamer elements are in boldface, and capital letters indicate matches to the canonical sequence.
