What is phenotypic mixing in viruses?
Phenotype mixing is a form of interaction between two viruses each of which holds its own unique genetic material. The two particles “share” coat proteins, therefore each has a similar assortment of identifying surface proteins, while having different genetic material.
Do viruses have phenotypes?
Virus phenotypes are associated with either the virion phase between infections or the infection and replication phase within a host cell (virocell). Different phenotypes are expressed and detectable at different times of the life cycle.
What is the name of the protein coat that protects the nucleic acid of a virus?
There are all sorts of virus shapes and sizes. However, all virus particles have a protein coat that surrounds and protects a nucleic acid genome. This protein coat is called a capsid, and the instructions for making the protein subunits of the capsid are encoded in the nucleic acid genome of the virus.
What is the difference between recombination and reassortment?
Reassortment only occurs in segmented RNA viruses, whereas recombination stricto sensu occurs in virtually all RNA viruses. The formation of a hybrid RNA sequence after inter-molecular exchange of genetic information between two nucleotide sequences results specifically from the latter.
What is a segmented RNA virus?
Glossary. Segmented RNA viruses. Viruses in which the genome consists of more than one RNA molecule (that is, segments). The genome segments can be packaged within a single virion particle or into separate particles. Type species.
Can two viruses combine?
Because influenza virus genomes are formed by 8 separate pieces of RNA (called “genome segments”), sometimes these viruses can “mate,” in a process called, “reassortment.” During reassortment, two influenza viruses’ genome segments can combine to make a new strain of influenza virus.
What is the outside protective coating of a virus made of?
A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein.