Whereas old dependency theory was Marxist in presentation, but nationalist in orientation, seeking to combine a theory of class struggle with a nationalist âthird worldistâ ideology, the new dependency theory is institutionalist in its analysis and political orientation.
Griffith concluded that the type II-R had been transformed into the lethal III-S strain by a transforming principle that was somehow part of the dead III-S strain bacteria. Today, we know that the transforming principle Griffith observed was the DNA of the III-s strain bacteria. While the bacteria had been killed, the DNA had survived the heating process and was taken up by the II-R strain bacteria. The III-S strain DNA contains the genes that form the protective polysaccharide capsule.
See function of DNA. Most bacteria, become resistant to antibiotics by way of one or more of the following mechanisms that are coded for by genes in the bacterial chromosome or in plasmids (def): 1. Producing an enzyme capable of inactivating the antibiotic; 2.ost bacteria, however, become resistant to antibiotics as a result of mutation or genetic recombination. Mutation (def) in bacterial DNA can alter the order of nucleotide bases in a gene and alter that gene product.