What are the two types of viruses classified by their genome?

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What are the types of virus genomes?

RNA viral genomes are broadly divided into double stranded RNA, positive and negative strand single stranded RNAs, monopartite and multipartite RNA viruses. One of the primary proteins encoded by all these RNA genomes is RNA dependent RNA polymerase, essential for their replication.

What are the 2 types of nucleic acids that make up a viral genome?

1.2.

Viral genomes consist of DNA or RNA only, never both. DNA and RNA molecules can be double stranded or single stranded, linear or circular (Fig. 1.6), segmented (composed of multiple pieces of nucleic acid) or nonsegmented.

What are the 4 forms of viral genomes?

Viral genomes are very diverse, since they can be DNA or RNA, single- or double-stranded, linear or circular, and vary in length and in the number of DNA or RNA molecules. The viral replication process begins when a virus infects its host by attaching to the host cell and penetrating the cell wall or membrane.

What two viruses infect all the vertebrates?

Examples include, rabies, yellow fever and pappataci fever. The viruses that infect other vertebrates are related to those of humans and most families of viruses that cause human diseases are represented. They are important pathogens of livestock and cause diseases such as foot-and-mouth disease and bluetongue.

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What are the 2 main parts of a virus?

The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.

How is the viral genome different from other genomes?

Although viruses are generally the smallest genomes, as a collection of biological genomes they exhibit the greatest variation. The major difference is that some of the genomes are DNA whereas others are RNA. In addition, both DNA and RNA genomes can be either double- or single-stranded (ds or ss).

How many genome types are known?

Three different genomic types can exist derived from one SNP. Since we inherit each one genome from our parents, the combination of each pair of genome makes three different genome types. In the case of previous example of A-G mutation,three different genome types can exist – namely, AA, AG, and GG.