Should Mordin be killed on Tuchanka in any situation, or if Mordin did not survive the suicide mission, his name will be engraved on the Memorial Wall onboard the Normandy.
However, Mordin can be saved during the mission if Wreav is the clan leader and the lack of Maelon's data leads to Eve's death. In this case Mordin can be convinced the krogan will only repeat the Krogan Rebellions under Wreav's command and he will willingly disappear to maintain the illusion of his death. If Mordin is saved and the genophage cure is sabotaged as a result, the salarians offer their support along with krogan support under Urdnot Wreav, as the krogan are unaware of the sabotage. Mordin also lends his expertise for the Crucible project, sending Shepard a heads-up on his current activities.
Not gonna lie, beside that ending debacle/scripted deaths of certain party members/unobtainable resources for war map without online play, Mass Effect 3 is one of my favorite games of all time.
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