Which of the following is a true statement about the phage Lambda? 1.It is a temperate phage
2)It is a virulent phage
3)It can infect the bacterium E.coli

The lambda phage can cause lysis in a bacterium when: 1.The lamda DNA is spontaneously excised from the host chromosome
2)The lambda DNA is induced to excise from the host chromosome
3)The lambda DNA excises from the host chromosome and moves back into the phage

In a mixed infection of T4 of genotype h⁺r X hr⁺ (where h is the mutant that produces clear plaques and r is the mutant that produces sharp edges)on a mixture of E.coli B and B2 cells,wild type recombinants form: