Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

About anti-evolution arguments

  1. Apr 6, 2004 #1
    This thread is not meant to be a debate on evolution. It is meant to express my argumentative ideas to other evolutionists.

    Most, if not all, the nontheistic (however theistic the motives may be) anti-evolution arguments that I've seen rely on the idea that changes in the form of members of a species are limited and cannot add up to a great change that results in a different species.

    Besides the fact that such a "great change" is really the composition of many smaller changes, there is one very important aspect to this argument that the pro-evolutionist can use to his/her advantate. This anti-evolution argument relies on thinking only about the manifested form of the creatures (phenotype?), not the DNA. Thinking about this yields a great counterargument:

    DNA is the basis for the structure and functions of an organism. DNA is composed of 4 basic building blocks (A,G,C,T). Mutations in DNA have been observed in all the order of these building blocks. Since all DNA is of the same form (an ordered combination of AGCT), if mutation is possible at any place in DNA, it should be possible anywhere in the DNA. This means that there is no restriction on the amount of changes in DNA over an indefinite number of generations (other than natural selection considerations), which means that evolution from one species to another is possible.
     
  2. jcsd
  3. Apr 6, 2004 #2

    Janitor

    User Avatar
    Science Advisor

    Are you talking about point mutations, or whatever they call it when one base pair changes? There is that, and then there are more dramatic mutations as well, I think. An example would be the insertion of a new chunk of base pairs between two base pairs, or the deletion of a chunk. Also, a change in number of chromosomes is pretty dramatic. In this last case, anti-evolutionists like to say: "When and if number of chromosomes can be different in offspring than it was in the parents, what other creature could that unique offspring successfully mate with?" Do biologists have a good answer to that question? Does it require the same exact chromosome number change to occur in some member of the opposite sex within that particular pack of animals, during the same general time period, so that those two can mate? (Same question for sexually reproducing plants.)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: About anti-evolution arguments
  1. Argument (Replies: 2)

  2. About Evolution (Replies: 23)

  3. About the anti-LHC guy (Replies: 4)

Loading...