This gene controls the operator gene in cooperation with a chemical substance called inducer present in the cytoplasm. A regulator gene is not necessarily adjacent to the operator gene which it controls. The regulator gene codes for and produces a protein called repressor.
The Gram-positive bacteria include staphylococci (staph), streptococci (strep), pneumococci, and the bacterium responsible for diphtheria (Cornynebacterium diphtheriae) and anthrax (Bacillus anthracis). The Danish bacteriologist J.M.C. Gram (1853-1938) devised a method of staining bacteria using a dye called crystal (gentian) violet. Gram's method helps distinguish between different types of bacteria. The gram-staining characteristics of bacteria are denoted as positive or negative, depending upon whether the bacteria take up and retain the crystal violet stain or not.
Gram-positive is a result of the Gram staining technique, developed by Danish scientist Hans Christian Gram (1853 - 1938). Bacteria can have two types of cell walls. Gram-Po â¦ sitive bacteria have a relatively thick layer of peptidoglycan. Gram-negative bacteria have a much thinner layer of peptidoglycan.There are 4 basic steps to a Gram-staining.   # The smear is flooded with a primary stain (such as crystal violet).acteria can have two types of cell walls. Gram-Po â¦ sitive bacteria have a relatively thick layer of peptidoglycan. Gram-negative bacteria have a much thinner layer of peptidoglycan. There are 4 basic steps to a Gram-staining.