Alignment of mouse and other five species (rat, human, dog, opossum, chicken): Positions of transposable elements at Pldi-Ak158810 loci. The linkages between two chromosome fragments mean one or a few adjacent blocks in the alignment, and red ones mean inversion. Various class of transposable elements are plot in five colors. SINE, short interspersed nuclear elements; LINE, long interspersed nuclear elements; DNA, DNA repeat elements; LTR, long terminal repeat elements, including retroposons; Others, other types of repeat sequences, including simple repeat, sequences with low complexity. Transposable elements exist in at least two species including mouse were annotated with character A-K.