Fitness landscape
Fitness landscape
Fitness landscape (pronunciation: /ˈfɪtnəs ˈlændskeɪp/) is a concept derived from evolutionary biology that helps to visualize the relationship between genotypes (or phenotypes) and reproductive success. It is a metaphor used to think about the processes of evolution in multidimensional space.
Etymology
The term "fitness landscape" was first coined by the evolutionary biologist Sewall Wright in the 1930s. The word "fitness" refers to the biological concept of fitness, i.e., reproductive success. The "landscape" part of the term is a metaphor for a topographical map where peaks represent high fitness and valleys represent low fitness.
Definition
A fitness landscape is a graphical representation of how a population's fitness varies with its genotypes or phenotypes. In this landscape, each point represents a different genotype or phenotype, and the height of the point corresponds to the fitness associated with that genotype or phenotype.
Related Terms
- Adaptive landscape: This is a concept related to the fitness landscape, but it focuses on the fitness of different phenotypes in a specific environment.
- Fitness function: This is a particular type of objective function that is used to summarise, as a single figure of merit, how close a given design solution is to achieving the set aims.
- Genetic drift: This is the change in the frequency of an existing gene variant in a population due to random sampling of organisms.
- Natural selection: This is the differential survival and reproduction of individuals due to differences in phenotype.
See Also
External links
- Medical encyclopedia article on Fitness landscape
- Wikipedia's article - Fitness landscape
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