Search results
Results from the WOW.Com Content Network
A virion contains a genome (a long molecule that carries genetic information in the form of either DNA or RNA) surrounded by a capsid (a protein coat protecting the genetic material). The shapes of these virus particles range from simple helical and icosahedral forms for some virus species
The origin of viruses is unclear because they do not form fossils, so molecular techniques have been used to compare the DNA or RNA of viruses and are a useful means of investigating how they arose. [36] Viruses are now recognised as ancient and as having origins that pre-date the divergence of life into the three domains. [37]
The origin of viruses is unclear because they do not form fossils, so molecular techniques have been used to compare the DNA or RNA of viruses and are a useful means of investigating how they arise. [107] Viruses are now recognised as ancient and as having origins that pre-date the divergence of life into the three domains. [108]
Chrysochromulina is a particularly important genus as it can comprise more than 50% of the photosynthetic nanoplanktonic cells in the ocean. [36] Little is known about the life cycle of the virus infecting these flagellate-containing planktonic species, Chrysochromulina brevifilum and C. strobilus. Suttle and Chan (1995) were the first to ...
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 ...
The virus, later named the Skeletonema costatum DNA virus (ScDCV), was found to have an icosahedral capsid and a double-stranded DNA genome. [16] Subsequently, after the discovery of Skeletonema costatum DNA virus (ScDCV), another Diatom virus was isolated and characterized as the Chaetoceros setoensis DNA Virus (CsetDNAV), which was found to ...
Densovirinae [1] is a subfamily of single-stranded DNA viruses in the family Parvoviridae. [2] [3] The subfamily has 11 recognized genera and 21 species. [4]Densoviruses are known to infect members of insect orders Blattodea, Diptera, Hemiptera, Hymenoptera, Lepidoptera, and Orthoptera, while some viruses infect and multiply in crustaceans such as shrimp or crayfish, or sea stars from phylum ...
The tiny (0.6 μm) marine cyanobacterium Prochlorococcus, discovered in 1986, forms today an important part of the base of the ocean food chain and accounts for much of the photosynthesis of the open ocean [84] and an estimated 20% of the oxygen in the Earth's atmosphere. [85]