Science Bowl Question

W) Genomic DNA of a bacterial species does not contain the recognition sequences for its own restriction endonucleases

X) Bacteria apply protective methyl groups to DNA at sites recognized by their restriction endonucleases

Y) Bacteria have proteins associated with their genomic DNA, preventing the endonucleases from getting close enough to cut

Z) Sequestration of chromosomal DNA in the nucleoid region of a bacterial cell protects it from being cut by restriction endonucleases