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Dictionary » M » Macroevolution

Macroevolution

Definition

noun, plural: macroevolutions

Evolution happening on a large scale, e.g. at or above the level of species, over geologic time resulting in the formation of new taxonomic groups.


Supplement

Macroevolution involves major evolutionary changes at or above the level of species. It is contrasted with microevolution, which is mainly concerned with the small-scale patterns of evolution within a species or population.


Word origin: Greek makro-, from makrós, long + evolution.
Related forms: macroevolutionary (adjective).

Compare: microevolution.


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DNA replication, Cell division and Evolution

... genetic studies show transitions and connections between much more separate phylogenetic groups. There is no such dichotomy as microevolution and macroevolution, there all part of the same continuum.

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by Darby
Sun Jun 07, 2009 12:53 am
 
Forum: Evolution
Topic: DNA replication, Cell division and Evolution
Replies: 16
Views: 437

Natural selection is proven wrong

... works, which right away makes it a very incomplete model of reality. And you're not going to model intelligently mate-selected multicellular macroevolution on your PC even best supercomputer which forces you to find another way to sum up what is going on in the genome to account for what ...

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by GaryGaulin
Wed Apr 29, 2009 9:53 am
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16277

Re: Natural selection is proven wrong

... genes that vary within a populations affect only minor aspects of form and function, while genes that govern major changes - the very stuff of macroevolution - apparently do not vary, or vary only to the detriment of the organism. (McDonald, "The Molecular Basis of Adaption: A Critical ...

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by gamila
Wed Apr 22, 2009 3:47 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16277

Microevolution is a fairytale

... etc) So the challenge here, is for evos to present me even ONE example -- one controlled scientific experiment -- of microevolution, macroevolution or any other sort of evolution that demonstrates that natural selection has caused a genetic adaptation via the selection of a random ...

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by supersport
Sun Aug 10, 2008 3:19 pm
 
Forum: Evolution
Topic: Microevolution is a fairytale
Replies: 23
Views: 3262

Re:

... jungles, etc. You got me curious though, do you remember wich phylum you talked in your class? would like to know. the distinction between macroevolution and microevolution is a false one Well, i didn't meant it was a different field. Macroevolution can be explained by common descent in ...

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by lifemare
Tue Jul 29, 2008 8:14 am
 
Forum: Evolution
Topic: Evolution
Replies: 36
Views: 5158
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