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Experimental economics researchers have demonstrated how sunspots could affect economic activity. [ 7 ] The name is a whimsical reference to 19th-century economist William Stanley Jevons , who attempted to correlate business cycle patterns with sunspot counts (on the actual sun ) on the grounds that they might cause variations in weather and ...
The American naturalist J. T. Gulick (1832–1923) was the first to use the term "divergent evolution", with its use becoming widespread in modern evolutionary literature. [2] Examples of divergence in nature are the adaptive radiation of the finches of the Galápagos, changes in mobbing behavior of the kittiwake, and the evolution of the ...
Allochronic speciation (also known as allochronic isolation, or temporal isolation) is a form of speciation (specifically ecological speciation) arising from reproductive isolation that occurs due to a change in breeding time that reduces or eliminates gene flow between two populations of a species.
Macroevolution is often thought of as the compounded effects of microevolution. map unit (m.u.) See centimorgan. maternal effect Any nongenetic effect of the mother on the phenotype of her offspring, owing to factors such as cytoplasmic inheritance, transmission of congenital disease, and the sharing of nutritional conditions. [1] mating system
In biology, phylogenetics (/ ˌ f aɪ l oʊ dʒ ə ˈ n ɛ t ɪ k s,-l ə-/) [1] [2] [3] is the study of the evolutionary history of life using genetics, which is known as phylogenetic inference. It establishes the relationship between organisms with the empirical data and observed heritable traits of DNA sequences, protein amino acid sequences ...
In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. [1] This state of little or no morphological change is called stasis.
The storm that pummeled California this week was fueled by an atmospheric river, a plume of moisture that extended across the Pacific to near Hawaii. WHAT IS AN ATMOSPHERIC RIVER? Atmospheric ...
Climate change and the associated changing weather patterns occurring worldwide have a direct effect on biology, population ecology, and the population of eruptive insects, such as the mountain pine beetle. This is because temperature is a factor which determines insect development and population success. [89]