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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
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]
Darwin's theory of evolution by natural selection is the only scientific explanation for why an animal's behaviour is usually well adapted for survival and reproduction in its environment. However, claiming that a particular mechanism is well suited to the present environment is different from claiming that this mechanism was selected for in ...
Animals categorized by adaptation or ecological niche; Subcategories. This category has the following 29 subcategories, out of 29 total. ...
Phenotypic plasticity refers to some of the changes in an organism's behavior, morphology and physiology in response to a unique environment. [1] [2] Fundamental to the way in which organisms cope with environmental variation, phenotypic plasticity encompasses all types of environmentally induced changes (e.g. morphological, physiological, behavioural, phenological) that may or may not be ...
Temporal plasticity, also known as fine-grained environmental adaptation, [1] is a type of phenotypic plasticity that involves the phenotypic change of organisms in response to changes in the environment over time. Animals can respond to short-term environmental changes with physiological (reversible) and behavioral changes; plants, which are ...
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 ...