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Influenza
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What is lysogeny?
Lysogeny is when a virus incorporates its genetic material into its hostâ??s genome. This allows the virus to remain dormant until it enters the lytic stage, during which the virus reproduces.
What is a reterovirus?
A retrovirus is an RNA virus that is replicated in a host cell via the enzyme reverse transcriptase to produce DNA from its RNA genome. The DNA is then incorporated into the host's genome by an integrase enzyme. The virus thereafter replicates as part of the host cell's DNA. Retroviruses are enveloped viruses that belong to the viral family Retrovirida.
What is the complete set genes of an individual?
genome
What are viral genomes composed of?
Viruses have the largest amount of genomic diversity of any group known to biology. Generally they can be split into two groups: DNA viruses and RNA viruses.The genome of a DNA virus is composed of: guanine, thymine, cytosine, and adenine.The genome of an RNA virus is composed of: guanine, uracil, cytosine, and adenine.
What is true about a lysogenic infection?
Many viruses enter the lytic cycle immediately following infecting the host cell. However, some viruses may not lyse their host immediately and enter the lysogenic cycle. At the start of the lysogenic cycle, the virus genome is integrated into the host chromosome instead of being immediately transcribed and translated. The virus genome then lies dormant in the host chromosome until a later event triggers its excision from the host chromosome. The excised viral genome will then be transcribed and translated and the virus enters the lytic cycle. the virus hides in the host's DNA.
What contributes to antigenic shift in influenza viruses?
a segmented genome
A new virus is discovered the genome of which is found to be 28 percentA23percentT 24 percent C and 25percent G What does this tell you about the genome of virus?
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The virus that causes rabies belongs to the what family?
Rabies virus belongs to the order Mononegavirales, which are viruses with a non-segmented, negative-stranded RNA genome. Rabies virus can be further classified as belonging to the Rhabdoviridae family of viruses and the genus Lyssavirus. There are several variations of the rabies virus that can cause rabies.
Is west nile a DNA or RNA virus?
West Nile virus is a virus with a single stranded RNA genome (ssRNA)
How does the virus affect the genetics of a cell?
Virus penetrates its genetic material into the host. The genome is then inserted randomly on a point of the host genome. Since it is an random event, it can block a pathway of that particular or cause any mutation due to the insertion of viral genome.
What is an antigenome?
An antigenome is a complementary strand of RNA from which the genome of a virus is constructed.
What is a helical virus?
A helical virus has a spiraling structure similar to a spiral staircase. The virus genome is arranged in the middle of the spiral staircase. The Tobacco mosaic virus is a helical virus.
How big is HPV?
HPV is a small DNA virus with a genome of about 8000 bases.
What is the function of integrase?
integrase its is an enzyme that integrate virus gonome to the host genome.
What is an alphavirus?
An alphavirus is a virus of the genus Alphavius, a group IV virus which has a positive sense, single-stranded RNA genome.
What is antigenic drift?
The genome of viruses can mutate over time through a variety of mechanisms. Some viruses are more prone to these mutations than others. When the genome changes, this changes the proteins that are expressed by the virus, included the proteins that are present on the surface of the virus. These proteins are the antigens that are recognised by the host immune system and which trigger the immune response. Antigenic drift is when the genome of the virus mutates thus changing the antigens expressed by the virus. This means that an individual immunized against a virus may not be protected if the virus undergoes antigenic drift as the proteins present of the surface of the virus are not the same as the virus against which the individual was immunized.
What is Strand A flu?
An RNA virus whose genome is complementary to RNA and that carries mRNA polymerases necessary for the synthesis of a new virus.
