Figure 1.

One satellite and four transposable element probes were hybridized to a 10-genome equivalent Tetraodon BAC library, and a large fraction of clones in common were identified. (A) The four transposable elements include Dr-Line, a LINE element similar to a Danio rerio (zebrafish) LINE; Dm-Line, which is a different LINE element homologous to Drosophila factor I; a TC1-like, and a copia-like sequences. Together the five probes (10-mer satellite, Dr-Line, Dm-Line, TC1-like, and Copia-like) identify 1,743 clones, of which 1,562 are identified with at least one transposable element and 76 clones hybridize with all four elements. The Dm-Line (B) and the TC1-like (C) probes were cohybridized by FISH to the same Tetraodon metaphase chromosome preparations and show distinct signals in the same pairs of small subtelocentric chromosomes. (Magnification: ×750.)