<prompt> Lambda phage which of the following is true ?It causes mad cow diseaseLysogenic to lytic conversion cannnot occurLysogenic form incorporates in host DNA remain dormantLytic phase incorporates in host DNA, proliferate causes rupture of cell  <response>: Ans. is c i.e., lysogenic form incorporates in host DNA and remain dormant . Lambda phase is nothing else but prototype of bacteriophage. . It has already been explained in previous explaination that lysogenic form is incorporated into the host genome not in lytic phase. In lytic phase,there is replication of phage inside the bacteria that causes lysis of bacteria. . On exposure to ultraviolet light or other agents the lysogenic phase undergoes induction i.e., the phase DNA is excised from the host cell and it undergoes lytic cycle. 