X-Gal is a chromogenic substrate for b-galactosidase that produces a blue that can easily be detected visually over background. X-Gal is the substrate of choice for blue-white selection of recombinant bacterial colonies with the lac genotype.
X-Gal is a chromogenic substrate for b-galactosidase that produces a blue that can easily be detected visually over background. X-Gal is the substrate of choice for blue-white selection of recombinant bacterial colonies with the lac genotype.