macroevolution


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macroevolution

(măk′rō-ĕv′ə-lo͞o′shən, -ē′və-)
n.
Large-scale evolution occurring over a very long period time that results in the formation of new species and higher-level taxonomic groups.

mac′ro·ev′o·lu′tion·ar′y (-shə-nĕr′ē) adj.

macroevolution

A term of art for large-scale evolution of ecologically separated gene pools, which occurs at or above the level of speciation, resulting in relatively large and complex changes such as anagenesis and cladogenesis stasigenesis.

macroevolution

the collective processes by which new species arise and others become extinct.
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Conduct pre- and postdiagnostic tests of macroevolution using the Measure of Understanding of Macroevolution (Nadelson & Southerland, 2010).
Consequently, future studies that (1) obtain data from multiple molecular markers for a broad cross-section of beetles, neuropterids and Strepsiptera, (2) incorporate the latest information from the beetle fossil record, and (3) use appropriate and statistically rigorous methods for estimating beetle phylogeny and divergence times will undoubtedly contribute further and more robust insights into beetle phylogeny and macroevolution, including factors contributing to the apparent success of the order.
The idea that macroevolution has mainly been the result of changes at cis-regulatory sites was first developed by Carroll (2000, 2005) and Stern (2000).
Presented in a debate format, the essays offer different sides of one question, such as whether traits have evolved because of a past advantage, whether species are real, whether selection operates primarily on genes, whether microevolution and macroevolution are governed by the same processes, whether memetics provide a useful way for understanding cultural evolution, whether there is a place for intelligent design in the philosophy of biology, and evolutionary developmental biology versus the neo-Darwinian paradigm.
Referring to microevolution and macroevolution connection: 'no extra ingredient needs to be added at the micro level (evolution) to explain the macro level (evolution).
On the one hand, the related concepts of coevolution and escalation both assume that biological factors are major agents of natural selection and that organisms respond evolutionarily to selective factors imposed by other organisms, yielding arms races between evolving taxa (Dietl & Kelley 2002); however, whether these factors are important in macroevolution remains an open question (Gould 1985, Madin et al.
In this way, the distinction appears to parallel (appropriately enough) the distinction between microevolution and macroevolution in biology.
This change would be referred to as macroevolution.
Adaptation reviewed: a phylogenetic methodology for studying character macroevolution.
Finding a trend that mirrors that of the Cambrian, in an independent group of organisms, gives scientists another reason to believe that macroevolution proceeds in spurts rather than only by gradual change.
The role of coding in the history of life can be appreciated by underlining that the origins of new organic codes are closely associated with the great events of macroevolution.