“…Its presence or absence, and the divergence of sequences shared among species, may be powerful tools, throwing light on the evolutionary relationships among closely related species. Such information has proven to be useful in a variety of organisms, for example, insects (Bachmann and Sperlich, 1993;Juan et al, 1993;Bachmann et al, 1994;Pons et al, 1997), fishes (Garrido-Ramos et al, 1995;de la Herrán et al, 2001;Lanfredi et al, 2001), birds (Madsen et al, 1992), mammals (Hamilton et al, 1992;Wijers et al, 1993;Volobouev et al, 1995;Lee et al, 1999), and plants (Galasso et al, 2001).…”