"At some point, you'll travel to the Krogan homeworld, and if Wrex is dead, you'll understandably meet with an icy reception. But if he's alive, you'll find that he's united all the Krogan clans under the banner of Clan Urdnot to combat the genophage and strengthen the Krogan race. That Wrex... what a guy. Shepard."

*crag* yes.