Area code 412 is a Pennsylvania area code that covers Pittsburgh and some of the surrounding areas.Area code 412 overlays the area code of 878. Pennsylvania has area codes of 215, 267, 272, 412, 484, 570, 610, 717, 724, 814, 878.The following map shows the coverage of 412 area code. The coverage area is shown in green.ennsylvania has area codes of 215, 267, 272, 412, 484, 570, 610, 717, 724, 814, 878. The following map shows the coverage of 412 area code.
The ampicillin resistance gene (AmpR) is called a selectable marker gene and is incorporated into several plasmids that are commonly used in a wide range of genetic engineering and molecular biology experiments.
Best Answer: It confers ampicillin resistance to the cell that has the plasmid carrying the amp^r gene. The gene works by encoding a subunit of the enzyme, beta lactamase, that breaks down ampicillin.This subunit combines with a subunit already present in the bacterial cells to form a working enzyme which breaks down the ampicillin and allows the bacteria to survive.I'm not sure what you're asking...he gene works by encoding a subunit of the enzyme, beta lactamase, that breaks down ampicillin. This subunit combines with a subunit already present in the bacterial cells to form a working enzyme which breaks down the ampicillin and allows the bacteria to survive. I'm not sure what you're asking...