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Topic: Macroevolution


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In the News (Wed 24 Apr 19)

  
  Macroevolution - Wikipedia, the free encyclopedia
Macroevolution is largely disputed by many creationism and intelligent design advocates.
The first theory of macroevolution, Lamarckism, developed by biologist Jean-Baptiste Lamarck, asserted that individuals develop traits they use and lose traits they do not use, and that individuals pass the acquired traits onto their offspring.
In bringing macroevolution and microevolution to the English language, wrote "we are compelled at the present level of knowledge reluctantly to put a sign of equality between the mechanisms of macro- and microevolution" (Dobzhansky, 12).
en.wikipedia.org /wiki/Macroevolution   (1347 words)

  
 Talk:Macroevolution - Wikipedia, the free encyclopedia
Those who think that "macroevolution" is just the sum of many "microevolutions" don't use the terms...to them it is all just "evolution" and the same mechanisms work at all scales, from sub-species all the way to domains.
Macroevolution, by comparison, is the emergence of new species, over presumably a very long period of time, caused at the genetic level by the introduction of new genetic material, or new information in the DNA of the organism.
The term macroevolution refers to the emergence of new species and higher taxa through evolution, which, according to some cannot be explained using the gradual changes inherent in evolution.
en.wikipedia.org /wiki/Talk:Macroevolution   (7285 words)

  
 Evolution - A-Z - Macroevolution   (Site not responding. Last check: 2007-11-07)
Macroevolution is evolution on the grand scale: the term refers to events above the species level; the origin of a new higher group, such as the mammals, would be an example of a macroevolutionary event.
Macroevolution has mainly been studied morphologically, because we have more taxonomic and fossil evidence than for other kinds of characters, such as physiology or chromosomes.
Macroevolution can be contrasted with microevolution: evolutionary changes on the small scale, such as changes in gene frequencies within a population.
www.blackwellpublishing.com /ridley/a-z/Macroevolution.asp   (168 words)

  
 Macroevolution FAQ
Another way to state the difference is that macroevolution is between-species evolution of genes and microevolution is within-species evolution of genes.
In the "modern synthesis" of neo-Darwinism, which developed in the period from 1930 to 1950 with the reconciliation of evolution by natural selection and modern genetics, macroevolution is thought to be the combined effects of microevolutionary processes.
The terms macroevolution and microevolution were first coined in 1927 by the Russian entomologist Iurii Filipchenko (or Philipchenko, depending on the transliteration), in his German-language work Variabilität und Variation, which was the first attempt to reconcile Mendelian genetics and evolution.
www.talkorigins.org /faqs/macroevolution.html   (1139 words)

  
 Macroevolution - CreationWiki   (Site not responding. Last check: 2007-11-07)
Macroevolution in general terms means large genetic change, but the precise meaning varies depending on who is using the word, and some creationists recommend not using the term at all.
Macroevolution is distinguished from microevolution, which is the lesser quantity of change that occurs within a population.
Evolutionists use macroevolution to propose an evolutionary relationship between organisms that are vastly different, and in fact claim that the process is responsible for the common descent of all organisms on Earth.
www.nwcreation.net /wiki/index.php?title=Macroevolution   (798 words)

  
 29 Evidences for Macroevolution   (Site not responding. Last check: 2007-11-07)
In evolutionary debates one is apt to hear evolution roughly parceled between the terms "microevolution" and "macroevolution." Microevolution, or change beneath the species level, may be thought of as relatively small scale change in the functional and genetic constituencies of populations of organisms.
Macroevolution, as used here, is the theory of common descent with gradual modification.
In this essay, macroevolution alone is specifically considered and weighed against the scientific evidence; in general, separate "microevolutionary" theories are left unaddressed.
www.evcforum.net /RefLib/EvidencesMacroevolution.html   (974 words)

  
 Macroevolution - EvoWiki   (Site not responding. Last check: 2007-11-07)
Macroevolution is generally understood to be the process of speciation, and in particular, cladogenesis—the bifurcating or branching pattern of evolution whereby an ancestral taxon diverges over time and apomorphies appear.
Macroevolution is the part of evolution that creationists are not willing to accept.
According to Douglas Futuyma, speciation and thus macroevolution was already observed by Dobzhansky and Pavlovyks (Dobzhansky, Pavlovyks, 1971, Nature 23, 1971, 289-292) in laboratory on the fly species Drosophila paulistorum.
wiki.cotch.net /index.php/Macroevolution   (208 words)

  
 The Straight Dope Mailbag: The Straight Dope Mailbag: Do creationists accept microevolution but not macroevolution?
As I am sure you are aware, macroevolution has more to do with the "common ancestor" aspects of evolutionary theory, whereas microevolution deals with the "survival of the fittest." As far as microevolution is concerned, it's hard to find fault with it.
Macroevolution, far from being "an entirely different story" from microevolution, is actually the same story, just on a larger scale.
Microevolution and macroevolution differ only as a matter of scale, as we have seen from the connectedness of all life, and from the sliding scale of events--from the simplest, smallest evolutionary changes up through the enormous effects wrought as the aftermath of global mass extinctions [p.
www.straightdope.com /mailbag/mmicromacroev.html   (1094 words)

  
 ENSI/SENSI Papers & Articles:Macroevolution
Macroevolution is concerned with origins, diversifications and extinctions over the sweep of geologic time: what the embryologist C.H. Waddington called "The whole real guts of evolution, how we get horses and tigers and things.
This means that much of macroevolution, like astronomy, is an historical science, a matter of reconstructing history and testing hypotheses of ancient cause-and-effect using evidence from the fossil record, embryology, molecular biology, and other geological and biological sciences.
What is sometimes not appreciated is that these different lines of evidence tend to converge on a single picture; their disagreements are almost always in the details, and even the larger remaining points of contention make sense in terms of the weaknesses and biases of one style of research or another.
www.indiana.edu /~ensiweb/pap.macr.html   (1709 words)

  
 SparkNotes: Macroevolution: Introduction
Macroevolution is the study of long-term evolutionary change.
That the first organisms, simple single-celled prokaryotes, have given rise to the current complexity and diversity of over 1 million known species, with an estimated 10 billion more unknown species, is almost unimaginable.
The patterns by which groups of organisms arise and become extinct are the subject of the study of Macroevolution.
www.sparknotes.com /biology/evolution/macroevolution/summary.html   (302 words)

  
 Apologetics: Is Evolution True?
Macroevolution is a theory or model of origins that holds to the idea that all varieties of life forms emanated from a single cell or “Common ancestor”.
Theistic macroevolution believes God is the cause behind life on the earth, but that He uses macroevolution to bring about new life forms and eventually the human race.
Macroevolution is not observed anywhere in the fossil record.
www.truthnet.org /Christianity/Apologetics/Evolutiontrue4   (4329 words)

  
 Brainstorms: Macroevolution redefined in terms of evolvability
Macroevolution can be viewed as the variation-driven (invention-driven) increases in the evolvability of an evolutionary system and the corresponding expansion of phenotype space and fitness terrain of the system; the evolution of evolvability.
Macroevolution is the evolutionary increase of that evolvability.
One source defined macroevolution as "phylogenetic biology" and defined microevolution as "population genetics", which is more or less consistent with the species line definition.
www.iscid.org /boards/ubb-get_topic-f-6-t-000414.html   (4353 words)

  
 CB902: Microevolution vs. Macroevolution
Macroevolution is defined as evolutionary change at the species level or higher, that is, the formation of new species, new genera, and so forth.
Creationists have created another category for which they use the word "macroevolution." They have no technical definition of it, but in practice they use it to mean evolution to an extent great enough that it has not been observed yet.
There is evidence for supermacroevolution in the form of progressive changes in the fossil record and in the pattern of similarities among living things showing an absence of distinct "kinds." This evidence caused evolution in some form to be accepted even before Darwin proposed his theory.
www.talkorigins.org /indexcc/CB/CB902.html   (406 words)

  
 Nature Nugget- Microevolution, Macroevolution, and Natural Selection - February 2003
Microevolution fits perfectly in the creation model, but Macroevolution is a gross misconception.
Macroevolution is a major change over a long period of time, involving the origin of new types of organisms from previously existing, but different, ancestral types.
An example of this theory is the belief that man evolved from apes, and that all life evolved from single-celled organisms over millions of years.
www.steps2life.org /php/view_article.php?article_id=889   (545 words)

  
 Macroevolution
Macroevolution can be defined simply as evolution above the species level, and its subject matter includes the origins and fates of major novelties such as tetrapod limbs and insect wings, the waxing and waning of multi-species lineages over long time-scales, and the impact of continental drift and other physical processes on the evolutionary process.
Taphonomic studies, from actualistic assessment of the fidelity of local assemblages to the quantification of the megabiases of available outcrop area and stratigraphic gap analysis, have begun to provide taxon-, environment- and time-specific assessments of the nature of paleontological data--and for the most part, the news is good on the reliability of paleontological data.
Macroevolution is an interdisciplinary field, and so one important goal is to strengthen interchange with other branches of paleontology -- systematics, biostratigraphy and paleoecology, for example can be crucial to developing rigorous datasets for maroevolutionary study.
www.nhm.ac.uk /hosted_sites/paleonet/paleo21/mevolution.html   (2617 words)

  
 Short Attention Span: Macroevolution: a smoking gun
Between Richard Sternberg losing his position at the Smithsonian for allowing a paper that questioned atheistic accounts of origins to the ignorant ranting of non-scientists who think that science mandates philosophical naturalism, to those who have been lied to and believe that large-scale evolution by naturalistic means is scientific, I've just had it.
An unpublished paper by three evolutionary biologists at UC Davis admits that macroevolution --large scale evolution-- is unscientific.
“Macroevolution” is the evolutionary biologist’s term for the large scale and long-term pattern of evolution.
shortattnspan.blogspot.com /2005/01/macroevolution-smoking-gun.html   (522 words)

  
 29+ Evidences for Macroevolution: the Scientific Case for Common Descent
In evolutionary debates one is apt to hear evolution roughly parceled between the terms "microevolution" and "macroevolution".
Macroevolution is evolution on the "grand scale" resulting in the origin of higher taxa.
In evolutionary theory it thus entails common ancestry, descent with modification, speciation, the genealogical relatedness of all life, transformation of species, and large scale functional and structural changes of populations through time, all at or above the species level (Freeman and Herron 2004; Futuyma 1998; Ridley 1993).
www.talkorigins.org /faqs/comdesc   (2151 words)

  
 Macroevolution
Macroevolution (major structural transition) is nothing more than microevolution (flies in bottles) extended.
Darwinian macroevolution predicts a cone of increasing diversity, with an increase in the diversity of body plans (or phyla) over time.
The fossil record suggests that macroevolution is indeed gradual, paced at a rate that leads to the conclusion that it is based on hundreds or thousands of gene substitutions no different in kind from the ones examined in our case histories.
mywebpages.comcast.net /mkent595/Macroevolution1.html   (4418 words)

  
 Concepts of Macroevolution
Macroevolution represents the overall effects of speciation, extinction, and microevolution and result in patterns of phylogeny within monophyletic taxa.
Phylogeny is the branching patterns of relationships among species within a monophyletic taxon that result from processes of macroevolution.
Inferences about phylogenetic patterns are made based on homology For example, a phylogenetic tree illustrates branching patterns that can be used to explain the distribution of apomorphies and plesiomorphies among a group of taxa.
bcrc.bio.umass.edu /ilip/newmeconcepts.html   (861 words)

  
 Articles / Dr. John's Q&A / What Is The Difference Between Macroevolution And Microevolution? - Institute for ...
Macroevolution refers to major evolutionary changes over time, the origin of new types of organisms from previously existing, but different, ancestral types.
Examples of this would be fish descending from an invertebrate animal, or whales descending from a land mammal.
Thus the scientific observations support the creation tenet that each basic type is separate and distinct from all others, and that while variation is inevitable, macroevolution does not and did not happen.
www.icr.org /index.php?module=articles&action=view&ID=1156   (491 words)

  
 The Truth About Macroevolution
On my joint-owned blog, The Truth About Macroevolution, we had a comment left by a John Connolly that, instead of giving evidence for evolutionism, gave 15 rebuttals of what he considered to be creationist attacks on evolution.
Macroevolution is being taught in our schools as fact, when it really has very little scientific basis.
This was microevolution within a species, but Darwin's hypothesis required macroevolution: drastic changes to the DNA code itself rather than the masking of unnecessary parts.
creationismunleashed.blogspot.com   (8101 words)

  
 ENSI/SENSI Papers & Articles:Macroevolution Patterns: Dinosaurs
The origins of the major living lineages, the emergence of key adaptations, and the exploitation of novel adaptive niches are among the issues considered under the umbrella of macroevolution.
A next wave of extinction is moving onto the continents as the human population soars to unprecedented levels.
Today, scientists studying macroevolution are attempting to measure the complete pattern of speciation for an entire evolving lineage.
www.indiana.edu /~ensiweb/pap.dino.html   (1468 words)

  
 Microevolution and Macroevolution
Macroevolution is the mythical process by which one kind of creature, such as a reptile, turns into another kind, such as a bird.
It is argued by evolutionists that given enough time, the small changes caused by microevolution can add up to big enough changes to create entirely new species.
It is easy to see how one who doesn't understand the process might think that the cumulative effects of small changes from eons of microevolution could result in macroevolution.
www.ridgenet.net /~do_while/sage/v1i4f.htm   (1422 words)

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