NATS 1670 Chapter Notes -Zoonosis, Sepsis, Transposable Element
Document Summary
{antigenic drift} are changes in one or more amino acids in proteins on the outer envelope of a virus such as influence. Because individuals may or may not be immune to these modified viruses minor epidemics can result. {antigenic shift} are changes in proteins in the outer envelope of a virus, resulting from the reassortment of viral genes. Major epidemics of influenza occur after antigenic shifts have taken place because individuals are not immune to the substantially modified viruses. {bacteriocin} are proteins produced by some bacteria, which inhibit the growth of other strains of the same organism or related species. {conjugation} is cell-to-cell contact in which dna copied from a plasmid or chromosome is transferred to a recipient cell. It can contribute to lateral gene transfer when it occurs between distantly related bacteria. {f-plasmid} is a fertility plasmid which contains genes that allow for conjugation of certain bacteria.