The geographic mosaic theory of coevolution predicts that hot and cold spots, selection mosaics and trait remixing should result in the three major patterns of coevolution described above.
What is geographic mosaic theory?
geographic mosaic theory of coevolution, in ecology, the theory postulating that the long-term dynamics of coevolution may occur over large geographic ranges rather than within local populations. … In still other populations the two species may continue to coexist but coevolve in different ways.
Which of the following is a condition of the geographic mosaic theory?
Answer: The three components of geographic mosaic theory include geographic variation in (1) the distribution of traits that evolve in response to selection, (2) the types of selection on the interacting species, and (3) the strength of the reciprocal selection.
What is a coevolutionary hotspot?
Coevolutionary hotspots are communities in which the pairwise interaction between two species exhibits coevolutionary selection (i.e., there is a G x G interaction on the fitnesses of both species) and these hotspots are expected to be embedded in a geographic matrix of coldspots.
How does coevolution happen?
In biology, coevolution occurs when two or more species reciprocally affect each other’s evolution through the process of natural selection. The term sometimes is used for two traits in the same species affecting each other’s evolution, as well as gene-culture coevolution.
What is the mosaic theory of insider trading?
The “mosaic” theory is the view that collecting individual pieces of immaterial non-public information cannot violate the laws against insider trading, even if those pieces of information effectively add up to material insight into trading decisions.
What does geographic variation mean in biology?
Geographical variation refers to differences among populations in genetically based traits across the natural geographic range of a species. … In the simplest case, we divide these factors into purely genetic versus environmental components to tease apart their relative contributions to observed phenotypic variation.
What is the role of the bacteria found in the whitish gray crust on the ants that tend fungal gardens?
What is the role of the bacteria found in the whitish-gray crust on the ants who tend fungal gardens? The bacteria provide antibiotics that target diseases dangerous to the fungal garden.
How do you explain natural selection?
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
What coevolution means?
coevolution, the process of reciprocal evolutionary change that occurs between pairs of species or among groups of species as they interact with one another. The activity of each species that participates in the interaction applies selection pressure on the others.
What causes a coevolutionary Coldspot?
It suggests that temporary high temperature caused declines in susceptible host density, thereby reducing encounter rates, leading to a coevolutionary cold spot.
What are hotspots and Coldspots?
The proactive approach prioritises coldspots, areas that show low levels of threat and high levels of biodiversity (Bryant et al. 1997), ES or both. … In contrast, the reactive approach prioritises hotspots, areas with high levels of threat and high levels of ES or biodiversity or both.
What are hot spots and cold spots?
Cold spots are defined as regions in which the fitnesses of at most one of the two species depend on interactions with the second species. Hot spots, in contrast, are defined as areas in which the species have reciprocal effects on each other’s fitnesses.
How do organisms benefit through coevolution?
Coevolution can be mutualistic or competitive. In mutualistic coevolution, two species that benefit from each other evolve together. In competitive coevolution, prey will evolve traits to prevent being eaten, and predators will then evolve to be able to eat their prey.
What is an example of coevolution where one species involved benefits and the other is harmed?
Coevolutionary commensalistic interactions include relationships where one species benefits while the other is not harmed. An example of this type of relationship is Batesian mimicry.
Which of the statements about the geographic mosaic theory of coevolution is true?
Which of the statements about the geographic mosaic theory of coevolution is TRUE: When there are more potentially interacting species in a system, the geographic mosaic theory suggests coevolutionary pressure will be weaker. How does coevolution act to increase biodiversity?