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  2. DNA virus - Wikipedia

    en.wikipedia.org/wiki/DNA_virus

    Orthopoxvirus particles. A DNA virus is a virus that has a genome made of deoxyribonucleic acid (DNA) that is replicated by a DNA polymerase.They can be divided between those that have two strands of DNA in their genome, called double-stranded DNA (dsDNA) viruses, and those that have one strand of DNA in their genome, called single-stranded DNA (ssDNA) viruses. dsDNA viruses primarily belong ...

  3. Viral life cycle - Wikipedia

    en.wikipedia.org/wiki/Viral_life_cycle

    How viruses do this depends mainly on the type of nucleic acid DNA or RNA they contain, which is either one or the other but never both. Viruses cannot function or reproduce outside a cell, and are totally dependent on a host cell to survive. Most viruses are species specific, and related viruses typically only infect a narrow range of plants ...

  4. Introduction to viruses - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_viruses

    The genes of viruses are made from DNA (deoxyribonucleic acid) and, in many viruses, RNA (ribonucleic acid). The biological information contained in an organism is encoded in its DNA or RNA. Most organisms use DNA, but many viruses have RNA as their genetic material. The DNA or RNA of viruses consists of either a single strand or a double helix ...

  5. Viral replication - Wikipedia

    en.wikipedia.org/wiki/Viral_replication

    It is the first step of viral replication. Some viruses attach to the cell membrane of the host cell and inject its DNA or RNA into the host to initiate infection. Attachment to a host cell is often achieved by a virus attachment protein that extends from the protein shell (), of a virus.

  6. Virus - Wikipedia

    en.wikipedia.org/wiki/Virus

    The genetic material within virus particles, and the method by which the material is replicated, varies considerably between different types of viruses. DNA viruses The genome replication of most DNA viruses takes place in the cell's nucleus. If the cell has the appropriate receptor on its surface, these viruses enter the cell either by direct ...

  7. Lytic cycle - Wikipedia

    en.wikipedia.org/wiki/Lytic_cycle

    The virus's nucleic acid uses the host cell's metabolic machinery to make large amounts of viral components. [2] In DNA viruses, the DNA transcribes itself into messenger RNA (mRNA) molecules that are then used to direct the cell's ribosomes. One of the first polypeptides to be translated destroys the host's DNA.

  8. Varidnaviria - Wikipedia

    en.wikipedia.org/wiki/Varidnaviria

    Varidnaviria is a realm of viruses that includes all DNA viruses that encode major capsid proteins that contain a vertical jelly roll fold.The major capsid proteins (MCP) form into pseudohexameric subunits of the viral capsid, which stores the viral deoxyribonucleic acid (DNA), and are perpendicular, or vertical, to the surface of the capsid.

  9. Virus classification - Wikipedia

    en.wikipedia.org/wiki/Virus_classification

    Viruses with a DNA genome, except for the DNA reverse transcribing viruses, are members of three of the four recognized viral realms: Duplodnaviria, Monodnaviria, and Varidnaviria. But the incertae sedis order Ligamenvirales , and many other incertae sedis families and genera, are also used to classify DNA viruses.

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