例句與造句

1. Together, these two processes form the restriction modification system.
2. It is also a part of the restriction modification system.
3. Restriction endonucleases are used as defense mechanisms in prokaryotic organisms in the restriction modification system.
4. The restriction modification systems in " N . meningitides " vary in specificity between different clades.
5. See restriction modification system for more information . talk ) 00 : 56, 6 December 2010 ( UTC)
6. It's difficult to find restriction modification system in a sentence. 用restriction modification system造句挺難的
7. Adenine or cytosine methylation is part of the restriction modification system of many bacteria, in which specific DNA sequences are methylated periodically throughout the genome.
8. Some viruses have evolved ways of subverting the restriction modification system, usually by modifying their own DNA, by adding methyl or glycosyl groups to it, thus blocking the restriction enzymes.
9. Genes encoding restriction modification systems have been reported to move between prokaryotic genomes within mobile genetic elements such as plasmids, prophages, insertion sequences / transposons, integrative conjugative elements ( ICEs ), and integrons.
10. To counteract these viruses, some bacteria have evolved restriction systems which only recognize and cleave modified DNA, but do not act upon the host's unmodified DNA . Some prokaryotes have developed multiple types of restriction modification systems.
11. Although early work on restriction modification systems focused on the benefit to bacteria of protecting themselves against invading bacteriophage DNA or other foreign DNA, it is now known that these systems can also be used to restrict DNA introduced by natural transformation from other members of the same, or related species.
12. "' Grete Kellenberger-Gujer "'( 1919-2011 ) was a Swiss molecular biologist known for her discoveries on genetic recombination and restriction modification system of DNA . She was a pioneer in the genetic analysis of bacteriophages and contributed to the early development of molecular biology.