Preview

Gradualism Versus Punctuationism

Good Essays
Open Document
Open Document
827 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Gradualism Versus Punctuationism
Gradualism versus Punctuationism

Although modern evolutionists are thought to be divided on the issues surrounding evolutionary theory, a close look at the evidence suggests that both the gradualist school of thought and the punctuationist school of thought share many characteristics in common. This is especially true when evaluating their beliefs about the fossil record, disagreement with the theory of saltation, and the misinterpretation of the word "rapid" in terms of punctuationist theory. Although this may be the case, the two theories do diverge on one important point, the notion of periods of stasis, but when taken as a whole, the evidence suggests that punctuationism is not as radical as it has been hyped up to be.
In terms of evaluating both arguments, it is important to dispel the some common myths about punctuationist theory. First, there appear to be many large gaps in the fossil record (Dawkins, 1986). Both gradualists and punctuationists agree that the only explanation for these apparent gaps, besides the notion that there are gaps in the record, would be creationism. Creationism holds that the reason for the appearance of largely different organisms in the fossil record, without organisms that display intermediate amounts of change is the presence of a divine creator. Neither gradualists nor punctuationists agree with this assumption.
In addition, when comparing the theories of gradualism with punctuationism, it is important to evaluate the theory of saltationism. Although punctuationists have often been confused with saltationists, this is a huge mistake. Saltationism holds that macromutations are the cause of evolutionary change (Dawkins, 1986). This could make sense when viewed in the context of the fossil record. Saltationists would argue that there really are no gaps in the fossil record. The dramatic changes noted in the fossil record would be products of macromutations which are signs of natural selection. This cannot be the case for

You May Also Find These Documents Helpful

  • Good Essays

    5. Which theory of evolutionary change suggests that species have long periods of stability interrupted by geologically brief periods of significant change during which new species are formed? (c) Punctuated equilibrium…

    • 886 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Bio 201 Review

    • 644 Words
    • 3 Pages

    1. The fossil record provides an incomplete chronicle of evolutionary change because the fossil records favors species that existed for a long time, were abundant and wide spread in certain kinds of environment and had hard shells.…

    • 644 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Fossils: Today’s fossil record is much more complete than in Darwin’s time. The earliest fossil date back 3.5 billion years. Transitional forms have been found, clearly showing the path of evolution. The fossil record is not complete but t…

    • 1253 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Phase 2 Ip

    • 274 Words
    • 2 Pages

    Click on the following link to review a video with additional information relevant to this assignment: Theories and the Theory of Evolution.…

    • 274 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    (1) This theory of evolution, though often presented as an established fact, is up to the present time only an unverified hypothesis. (2) Science has utterly failed to discover any missing links between man and the supposed animals from which he originated. (3) Furthermore, evolutionists argue that evolutionary trends occur through the processes of mutation. But this view fails to account for the increased complexity of man. (4) Scientists have utterly failed to demonstrate or identify the origin of life (organic) from inorganic substances.…

    • 1142 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Sci101-1302b-02

    • 1172 Words
    • 5 Pages

    Evolution is and ongoing process of change and diversification which every scientist to this day accept as a historical fact. However, evolution is a very controversial subject worldwide. There are many studies, theories, and opinions regarding how we became to be, including every living creature and human being, the universe and everything else that comes along with it, and especially how our planet Earth transformed into what it is today. Phyletic gradualism and punctuated equilibrium are two very controversial and debatable theories/concepts that have brought up lots of questions, opinions, and answers. Gradualism and punctuated equilibrium are two different concepts that seem to intertwine along each other’s path. In this IP 2 I will explain both theories.…

    • 1172 Words
    • 5 Pages
    Good Essays
  • Good Essays

    This separation of the river is described as a gradual change in which species came into their beings, which took place over a long period of time. Dawkins mentions in Chapter one that the river that he is referring to is that of DNA, “flowing through time” (Dawkins 4). He describes the river as being full of information and instruction on evolving, an abstract manual on the creation of species. With this being said, it can be seen that Chapter 1 and 3 are complements of each other and are able to support points made in each chapter. Evolution is gradual, as discussed in Chapter 1, further solidified in Chapter 3. Each generation of organisms is a sieve against which replicated and mutated genes are tested, a process that is not only gradual, but one that happens over time. Organisms become better and better as time goes on and are able to build off of what has happened in species before them. “Ancestors are rare, descendants are common,” meaning that good genes make successful organisms, which perpetuate good genes themselves (Dawkins…

    • 837 Words
    • 4 Pages
    Good Essays
  • Good Essays

    The spandrels of San Marco and Panglossioan paradigm: a critique of the adaptationist programme, a paper by S.J. Gould and R.C. Lewontin, portrays five of the alternative adaptationist programmes which are the most common view of evolutionary reasoning to date. The first adaptationist programme Gould mentions in the paper is a population that does not undergo selection or adaptation. In this type of population it is possible for the alleles to differentiate and then fix for different alleles. The next adaptationist programme mentioned in Gould's paper is the method that observes an organism as a “whole ” instead of breaking down them down into separate traits. This type of programme was beneficial in that it gave rise to ideas like allometry, material compensation and pleiotropy, The third type of programme Gould discusses in his paper is, “the decoupling of selection and adaptation” (Gould 592). This is a population where adaptation occurs without selection or selection without adaptation. In this type of programme Gould describes a situation where a population undergoes a mutation that doubles the fecundity, which doubles the offspring produced. This would be beneficial in nature if the amount of offspring survival was doubled, but due to limited resources half would not survive, producing the same amount of offspring. The fourth programme Gould discusses in his paper is, “Adaptation and selection but no selective basis for differences among adaptations”(Gould 593). In this type of population there is no distinguishing a difference between a population undergoing selection or adaptation. The final programme that Gould discusses in his paper is the relationship between two unrelated adaptations and what connects these adaptations. A population undergoing this type of programme will assign functions to certain characters that have been developed early on in life.…

    • 675 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Although the Darwinian evolution theory came out 150 years ago when it was first introduced in On the Origin of Species in 1859, nowadays there are still many people who firmly believe in the creationism, even some who are well educated. In chapter three of River Out of Eden Richard Dawkins brings out this situation and refutes creationism by citing scientific experiments, and finally he points out that gradualism is a principle of the evolution nature world, one that becomes indispensable when one is trying to explain complex phenomena.…

    • 1061 Words
    • 5 Pages
    Good Essays
  • Good Essays

    (Lawrence and Lee 77). This degenerate reaction shows how both sides of the argument are ignorant of another because they both believe wholeheartedly that one is correct and the other is wrong. This divide, while Drummond is meant to represent Evolutionist views and progress, is still deepened by Hornbeck’s despicable poignant…

    • 427 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    biology 5.01

    • 271 Words
    • 2 Pages

    Punctuated equilibrium theory argued that evolutionary change in fossil record came in fits and starts rather than a steady process of slow change.…

    • 271 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Text Books

    • 273 Words
    • 2 Pages

    Author: Hornsby Edition: 5th Copyright: 2011 Publisher: Pearson Education ISBN: 9780321708960 New: $214.75 Used: $161.25 New Rental: N/A Used Rental: N/A Choice Fossils and the History of Life History of Life Author: Cowen Edition: 4th…

    • 273 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    The geological record does not support Darwin’s theory because there are no intermediate species found in fossils and sometimes groups display abrupt modifications. However, this can be the result of changes in the earth’s surface, unfitting conditions for fossil formation, the destruction of existing fossils, and the lack of discovery of fossils. Darwin uses these possibilities to argue against the naturalists, saying that there is not enough knowledge about the history of earth to draw conclusions on…

    • 713 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Biology Research Paper

    • 822 Words
    • 4 Pages

    Explanations of how these findings impacted the developing theory of evolution and relate to the modern theory of evolution: He came up with the theory of punctuated equilibrium which explained that evolution didn't occur at a constant rate but it brought him into conflict with other evolutionary biologists such as Richard Dawkins. Punctuated equilibrium is now widely accepted as being a valid explanation for apparent gaps that had appeared in the fossil record. It still involved a process of natural selection so it didn't contradict Darwin's original theory.…

    • 822 Words
    • 4 Pages
    Good Essays
  • Good Essays

    The Wonderful Mistake

    • 1458 Words
    • 6 Pages

    This new form of evolution is a source of long-term progress, and is the cause of an abundance of short-term suffering. Take, for example, Lewis Thomas. He might take some injury to my claim that The Wonderful Mistake lacks some fundamental logic. However, in the end, his mistake led to some deep thinking on my part, and maybe would lead to some deepened perspective on his. This process of disagreement and discussion inherent anywhere imperfection is found is vitally important to progress.…

    • 1458 Words
    • 6 Pages
    Good Essays

Related Topics