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[18] [19] An example widely used today to study the interplay of adaptation and speciation is the evolution of cichlid fish in African lakes, where the question of reproductive isolation is complex. [20] [21] Adaptation is not always a simple matter where the ideal phenotype evolves for a given environment.
But the actual effect of climatic adaptation depends greatly on the species in question and often the amount of genetic variability within that species. The bodies of some animals, such as woodrats, are inversely correlated with the mean annual temperature of their environment. [9] This is an applied example of Bergmann's rule
Animals categorized by adaptation or ecological niche; Subcategories. This category has the following 29 subcategories, out of 29 total. ...
There are many environmental examples of sexual selection as an adaptive behavior; one popular example is sexual dimorphism. Sexual dimorphism is a morphological, phenotypic difference between males and females of the same species. [20] A common example of sexual dimorphism is difference in body size. [20]
Adaptationism is an approach to studying the evolution of form and function. It attempts to frame the existence and persistence of traits, assuming that each of them arose independently and improved the reproductive success of the organism's ancestors.
[1] [2] Starting with a single ancestor, this process results in the speciation and phenotypic adaptation of an array of species exhibiting different morphological and physiological traits. The prototypical example of adaptive radiation is finch speciation on the Galapagos ("Darwin's finches"), but examples are known from around the world.
A unique and complex example of plasticity is camouflage, an adaption that allows animals to avoid predators by hiding in plain sight. [14] The mechanisms behind camouflage are not the same in all species - they can be morphological, physiological, behavioral, or even a combination of traits. [15]
Local adaptation is a mechanism in evolutionary biology whereby a population of organisms evolves to be more well-suited to its local environment than other members of the same species that live elsewhere. Local adaptation requires that different populations of the same species experience different natural selection. For example, if a species ...