Organization of repetitive and conserved sequences in barley BAC 635P2 and the first 50 kb of rice BAC36I5. Genes are represented by arrows, transposable elements by boxes, and MITEs by triangles. Ta and Tb, Copia-like retrotransposon; Tc, non-LTR retroelement; Td, terminal-inverted repeat element; Te and Tf, nested BARE-1 retrotransposons; Tg, MuDR-like element; Th, Copia-like retrotransposon; Ti, nonautonomous Mutator element. SSRs with eight or more repeats are indicated by an asterisk.