The MacBook Pro follows, with its prices going from $2,199 down to $1,999 for the 15-inch version (and from $1,499 for the 13-inch version down to $1,299). That's a break from traditional Apple pricing, where prices would remain the same generation over generation, with updated components adding value.
Restriction enzymes can also be used to generate compatible ends on PCR products. In all cases, one or more restriction enzymes are used to digest the DNA resulting in either non-directional or directional insertion into the compatible plasmid.
The natural use of restriction enzymes by bacteria is to destroy viral DNA. Enzymes used to cut genes in recombinant DNA research are restriction enzymes.estriction enzymes are used to cut up DNA into fragments with 'sticky ends'. It allows for the gene of interest to be isolated. A plasmid can then also be cut with the same r â¦ estriction enzyme and the sticky ends are spliced together with DNA ligase.