title: Presumptive D2a point mutants of bacteriophage T4.
abstract: Mutants of bacteriophage T4 have been isolated that show phenotypes seen previously with those rII deletions that extend into the nearby D2a region. Analysis indicates that rII mutations are not necessary in order to get the D2a phenotypes.
mesh_terms: D003090:Coliphages / Q000145:classification* / Q000302:isolation & purification; D005827:Genetics, Microbial; D009154:Mutation; D010641:Phenotype