Another recent trend is the demonization of people of Hispanic descent in North America by some US politicians as somehow not being as deserving of an equal right to domicile as their northern-European descended cousins.his sometimes requires the use of otherism beforehand, to make people view the targeted group as an other.. One of the most long-standing ongoing examples of demonization is anti-Semitism, but lately there has been an increase in the West of virulent anti-Muslim sentiment.
Restriction enzyme: An enzyme from bacteria that can recognize specific base sequences in DNA and cut the DNA at that site (the restriction site). A restriction enzyme acts as a biochemical scissors. Also called a restriction endonuclease. A restriction enzyme is a protein produced by bacteria that cleaves DNA at specific sites. Bacteria use restriction enzymes to defend against bacterial viruses called bacteriophages (or phage). When a phage infects a bacteria, it inserts its DNA into the bacteria so that it might be replicated.
Restriction enzymes are nucleases that split only those DNA molecules in which they recognize particular subunits. Some split the target DNA molecule at random sites (Type I), but others split the molecule only at the recognition site (Type II) or at a fixed distance from the recognition site (Type III).