joharihunter3187 joharihunter3187 10-03-2018 Biology contestada What is a cistron? 2) a. if 2 different mutant rii phages are able to lyse e. coli k (our lab manual's shorthand for k12(λ)) when they co-infect it, while neither mutant can lyse it separately, what can you say about the 2 mutations?