These organisms were used to develop a model for frameshift mutations named after Streisinger.One example of these organisms has Qut and Nut sites, which bind to Q and N proteins duringantitermination. An experiment that showed that these organisms do not induce mutations that areharmful to their niche was used to show that mutations do not occur in response to selection. Thatexperiment was run by Luria and Delbruck. Radioactive phosphorous and (*) sulfur were used to tagthe DNA and protein shells of these viruses respectively in another experiment. That experimentshowed that DNA transmits genetic information and was 
These organisms were used to develop a model for frameshift mutations named after Streisinger.One example of these organisms has Qut and Nut sites, which bind to Q and N proteins duringantitermination. An experiment that showed that these organisms do not induce mutations that areharmful to their niche was used to show that mutations do not occur in response to selection. Thatexperiment was run by Luria and Delbruck. Radioactive phosphorous and (*) sulfur were used to tagthe DNA and protein shells of these viruses respectively in another experiment. That experimentshowed that DNA transmits genetic information and was run by Hershey and Chase. These viruses comein lambda and T4 variants. For 10 points, name these viruses that target bacteria.
These organisms were used to develop a model for frameshift mutations named after Streisinger.
bacteriophage