The model of DNA-histones has the following elements: 1. The hydrogen bonds between the complementary nucleotide bases function as informational gates. When the electrons pi of one nucleotide base are excited, an exchange of protons is produced between the two complementary bases. The result is the displacement of the conjugated double bonds which facilitates the inter-molecular transmission of the electronic wave of excitation by electro-magnetic coupling. 2. Each triplet of nucleotide bases of DNA fixes one definite amino acid (as in the genetic code). Between the nucleotide bases and the amino acids there are constituted informational gates, which ensure the circulation of the electronic wave of excitation. 3. An input signal molecule arrives at the receiver gene and unleashes the activity of the enzymes which introduce in the DNA-histones system the electronic wave of excitation. The electronic wave of excitation arises as a result of the break of the high-energy bonds of ATP. Then, the electronic excitation is transmitted to the productor gene where it represents the signal for starting the synthesis of the mRNA.