Structure of maritime pine genomic DNA contained in the BAC clones GenBank: KP172187 (a), GenBank: KP172184 (b) and GenBank: KP172195 (c) respectively. Light red boxes represent exons and introns the intervening line. The length in base pairs of each intron and exon is also indicated. Segments with similarity to transposable element and repetitive regions were identified with Repeat Masker and are represented by white and dark red boxes. The scale bar represents 5 kbp.