Baltimore classification

(noun)

a classification scheme that groups viruses into seven classes according to how the mRNA is produced during the replicative cycle of the virus

Related Terms

Examples of Baltimore classification in the following topics:

  • The Baltimore Virus Classification

    • The Baltimore classification groups viruses into families depending on their type of genome.
    • Much like the classification systems used for cellular organisms, virus classification is the subject of ongoing debate and proposals.
    • Baltimore classification (first defined in 1971) is a classification system that places viruses into one of seven groups depending on a combination of their nucleic acid (DNA or RNA), strandedness (single-stranded or double-stranded), Sense, and method of replication .
    • Named after David Baltimore, a Nobel Prize-winning biologist, these groups are designated by Roman numerals and discriminate viruses depending on their mode of replication and genome type.
    • List the characteristics of viruses that are useful for Baltimore classification

  • Virus Classification

    • To understand the features shared among different groups of viruses, a classification scheme is necessary.
    • The most commonly-used classification method today is called the Baltimore classification scheme which is based on how messenger RNA (mRNA) is generated in each particular type of virus.
    • The most commonly-used system of virus classification was developed by Nobel Prize-winning biologist David Baltimore in the early 1970s.
    • In addition to the differences in morphology and genetics mentioned above, the Baltimore classification scheme groups viruses according to how the mRNA is produced during the replicative cycle of the virus.
    • The Baltimore classification scheme, the most commonly used, was developed by Nobel Prize-winning biologist David Baltimore in the early 1970s.

  • Viral Identification

    • The Baltimore classification developed by David Baltimore is a virus classification system that groups viruses into families, depending on their type of genome (DNA, RNA, single-stranded (ss), double-stranded (ds), etc.) and their method of replication.
    • An example of Baltimore Virus classification I: dsDNA virusesII: ssDNA virusesIII: dsRNA virusesIV: (+)ssRNA virusesV: (−)ssRNA virusesVI: ssRNA-RT virusesVII: dsDNA-RT viruses

  • Nongenetic Categories for Medicine and Ecology

    • Similar to the classification systems used for cellular organisms, virus classification is the subject of ongoing debate due to their pseudo-living nature.
    • Essentially, they are non-living particles with some chemical characteristics similar to those of life; thus, they do not fit neatly into an established biological classification system.
    • Currently there are two main schemes used for the classification of viruses: (1) the International Committee on Taxonomy of Viruses (ICTV) system; and (2) the Baltimore classification system, which places viruses into one of seven groups.
    • Baltimore classification is a system that places viruses into one of seven groups depending on a combination of:
    • Other classifications are determined by the disease caused by the virus or its morphology, neither of which is satisfactory as different viruses can either cause the same disease or look very similar.

  • RNA Oncogenic Viruses

    • RNA viruses are classified based on the Baltimore classification system and do not take into account viruses with DNA intermediates in their life cycle.

  • Viral Replication and Gene Expression

    • RNA viruses are classified into distinct groups depending on their genome and mode of replication (and the numerical groups based on the older Baltimore classification).

  • Double-Stranded DNA Bacteriophages

    • Under the Baltimore classification scheme, the Caudovirales are group I viruses as they have double-stranded DNA (dsDNA) genomes, which can be anywhere from 18,000 base pairs to 500,000 base pairs in length.
    • This classification scheme was originated by Bradley in 1969 and has since been extended.

  • Plant DNA Viruses

    • DNA viruses belong to either Group I (double-stranded DNA; dsDNA) or Group II (single-stranded DNA; ssDNA) of the Baltimore classification system for viruses.

  • Classification of Sentences

  • The War in the Chesapeake

    • Secretary of War John Armstrong insisted that the British would attack Baltimore rather than Washington, even when the British Army was obviously on its way to the capital.
    • The subsequent Battle of Baltimore began with the British landing at North Point, where they were met by American militia.
    • The British also attempted to attack Baltimore by sea on September 13 but were unable to reduce Fort McHenry at the entrance to Baltimore Harbor, due to recent fortifications.
    • All the lights were extinguished in Baltimore the night of the attack, and the fort was bombarded for 25 hours.
    • Describe the burning of Washington, D.C. and the subsequent battles of Baltimore and Fort McHenry