- Proof of Lemma 5, Case (ii): "the label of e'_{t_1} is equal to z = |A_{i-1}| + 1" should be "the label of e'_{t_1} is equal to z = |A_{i-1} + 1|".
- Second paragraph of Section 2: "... \breve{A}_i is the size of the intergenic region between genes A_i and A_{i+1}" -> "... \breve{A}_i is the size of the intergenic region between genes A_i and A_{i-1}"