5. Genetics of Bacteria and Viruses
Bacterial Conjugation
5. Genetics of Bacteria and Viruses Bacterial Conjugation
8PRACTICE PROBLEM
In an experiment, two different bacterial strains are studied for their ability to synthesize the amino acid tryptophan. Strain A is trp⁺ his⁻ and Strain B is trp⁻ his⁺. When the two strains are mixed in a culture medium lacking tryptophan, no growth is observed. However, when a small amount of tryptophan is added to the medium, growth is observed. What is illustrated from this experiment?
In an experiment, two different bacterial strains are studied for their ability to synthesize the amino acid tryptophan. Strain A is trp⁺ his⁻ and Strain B is trp⁻ his⁺. When the two strains are mixed in a culture medium lacking tryptophan, no growth is observed. However, when a small amount of tryptophan is added to the medium, growth is observed. What is illustrated from this experiment?