Collecting altered DNA in Mutation Mode for Modern Warfare 3 can change how you fight. However, knowing the best ways in MW3 to farm DNA samples for the Altered Strain Event can take you far.  MW3: Fastest way to get altered DNA samples during Modern Warfare 3 Altered Strain Event The best way to farm the DNA samples in the Altered Strain event, is by collecting them from fallen enemies or caches while playing the Mutant Mode of MW3, Warzone Resurgence, and Zombies which runs from June 26 to July 24. If you’ve participated in the Critical Countdown Event where you need to get DNA samples, then you know the drill. Image: Activision If you play well and get tons of kills, samples could come with ease. I would recommend playing between medium and smaller-sized maps. That way, you can run into enemies more often than not.  Earning these DNA samples might give you a few Augmentations to make your selected Mutant class stronger.   All Augmentations explained...