5. Genetics of Bacteria and Viruses

A plaque assay studies viruses through what measurement?

A mixed infection of two bacteriophage strains is often used for what purpose?

A mixed infection of two bacteriophage strains was performed. Infection of bacteriophage strain 1 causes the bacteria to be red and large, while infection of bacteriophage strain 2 causes the bacteria colony to be black and small. The following results were obtained. Using this data, determine the distance between the color and size genes.