Model system (or Model organism) A cell type or simple organism-such as a bacterium, yeast, plant, fruit fly, or mouse-used to answer basic questions about biology.
Mutation (myoo-TAY-shun) A change in a DNA sequence.
Mouse model systems offer a powerful research tool for studying complex interactions related to cancer development.
So in the case of vertebrates, for example, Hedgehog has been intensely studied in model systems such as mice and in zebra fish and it play many roles in development.
Tracking the genetic effects of global warming: Drosophila and other model systems This online article looks at the spread and microevolution withing the common fruit fly, Drosphilia and possible relationahips of this speciation and global warming.
In 1971, Konopka and Benzer first identified a genetic component of the biological clock using the fruit fly as a model system.
RNA viruses are also used as a model system to study evolution in the laboratory.
One of the main theoretical models to study virus evolution is the quasispecies model.
See also ...
It is a plant model system of choice because of the additional advantages of short generation time (about five weeks), ...
Dictyostelium discoideum: Model System in Motion
Plasmodial (Acellular) Slime Molds (Myxomycetes) ...
Vrijenhoek, R. C. 1994. Unisexual fish: Model systems for studying ecology and evolution. Annual Review of Ecology and Systematics. 25:71-96.
The success and conceptual simplicity of the enhancer trap method was quickly adapted for use in other model systems including plants (Schell 1987), C. elegans (Hope 1991), and Drosophila (O'Kane and Gehring 1987).
 See also: Human, Genome, Trans, Sequence, Organ
  
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