Restriction modification system of bacteria exists to
(A) Protect bacteria from invading foreign DNA
(B) Help the bacterial chromosome to replicate
(C) Encourage recombination of new genetic material
(D) Promotes conjugation

New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials

Bacterial viruses :br A. Infect the bacteria , br B. Usually have double stranded DNA, br C. Are also called bacteriophages, br D.Lack protein coat

Following enzymes /techniques are used in the process of recombinant DNA technology A. Eco RI to cut the isolated genome B. DNA ligase C. Protease and ribonuclease for removal of proteins and RNA from DNA D. Production of recombination hosts E. lysozyme for isolation of the genetic material (DNA) F. gel electrophoresis for separation and isolation of DNA fragments Mark the correct sequence of their use.