Correspondences between consensus, mouse and human <i>Xist</i> elements and their putative origin.

Notes. Abbreviations: exons of the mammalian consensus gene – (c1–c10), human and mouse exons, respectively – (h1/m1 – h8/m8); pseudoexons – (ph, pm). Minimal promoter – (Pmin). Tandem repeats – (TR), transposable elements – (TE), endogenous retrovirus – (ERV). Pseudoexon (pEx) means a part of an intronic sequence which is present in other species as an exon.