Search results

  1. S

    Molecular Evolution?

    This book is a good summary of current research on the evolution of new genes at a molecular level. Many of the chapters have been made available by the authors on their own websites and where they are available i have provided a link below the chapter title: Origin and Evolution of New Gene...
  2. S

    duplication errors and beneficial mutations

    If this was true why does Neurospora crassa that has a mechanism to destroy duplications (preventing the normal mutational process of genome duplications) have significiantly fewer recent duplicates than other sequenced genomes. This means that a difference in normal mutational spectrum gives...
  3. S

    duplication errors and beneficial mutations

    Gene duplications and other normal forms of mutation seem to be enough to account for the differences in sequenced genomes. It is important to know what is needed for evolution to have occured before you can make a judgement about whether it is possible or impossible. The gene duplication rate...
  4. S

    duplication errors and beneficial mutations

    There are many examples of duplication of DNA that are harmful. But also absence/presence of duplications are part of normal human sequence variation with individuals differing by an average of 11 duplications (1) gene duplications are also a common feature of the human genome (2). It is likely...
  5. S

    The evolution of sexual reproduction

    This isn't what happens in the unicellular alga chlamydomonas. It reproduces asexually when resources are plentiful but switches to sexual reproduction when rsources are scarce or times of stress. So in these conditions it does seem sex is an advantage. Which unicellular organism where you...
  6. S

    Lucy - May have evolved from a Chimp

    I have attached a picture that shows d) an chimpanzee pelvis e) an australopithecus pelvis and f) a human pelvis from: Mechanisms for the acquisition of habitual bipedality: are there biomechanical reasons for the acquisition of upright bipedal posture?. Holger Preuschoft. J. Anat.(2004) 204...
  7. S

    Down Syndrome

    There are many examples of duplication of DNA that are harmful. But also absence/presence of duplications are part of normal human sequence variation with individuals differing by an average of 11 duplications (1) gene duplications are also a common feature of the human genome (2). It is likely...
  8. S

    Plant Evolution

    Here are a few resources: http://www.talkdesign.org/faqs/icdmyst/ICDmyst.html#venus "Evolution of Carnivory in Lentibulariaceae and the Lamiales" http://www.thieme-connect.com/ejournals/abstract/plantbiology/doi/10.1055/s-2004-817909 "Molecular evidence for the common origin of snap-traps...
  9. S

    the evolution of an important human brain gene

    ooo just found a public link to the full text article: http://www.unil.ch/webdav/site/cig/shared/kaessmann/ng1431.pdf comment: http://www.unil.ch/webdav/site/cig/shared/kaessmann/glud2_News_and_Views.pdf
  10. S

    the evolution of an important human brain gene

    Thought this might interest people: "1: Nat Genet. 2004 Oct;36(10):1061-3. Epub 2004 Sep 19. Birth and adaptive evolution of a hominoid gene that supports high neurotransmitter flux. Burki F, Kaessmann H. Center for Integrative Genomics, University of Lausanne, BEP, 1015 Lausanne...
  11. S

    Next piece of evidence: Ice-cores

    If you are interested in ice cores you can download the data and view it for yourself: http://www.ngdc.noaa.gov/paleo/icecore/current.html this page not only has ice core data but pollen, insect, coral, ocean drilling, and tree ring data available for download...
  12. S

    Molecular parahomology

    Interestingly many genes from distantly releated can functionally substitute perefectly well for the same gene in many different organisms - but there is still a nested hierarchy of similarity - so the designer must have made these relationships - is this just an elaborate hoax then? and just...
  13. S

    Creation Science Teacher!

    and if i might plug my own thread on the evolution of new genes: http://www.christianforums.com/t81701
  14. S

    Evolutionists and homosexuality

    There is balancing selection where the heterozygote has a greater survival advantage than either of the homozygotes - so it is possible for a homozygously deleterious gene can remain in the population via selection because of the advantage of being heterozygous. There is also evidence from...
  15. S

    Herbal Supplements/Remedies

    The latest review of St Johns Wort i could find was this: Phytomedicine. 2003 Nov;10(8):688-99. A review of clinical and experimental observations about antidepressant actions and side effects produced by Hypericum perforatum extracts. Rodriguez-Landa JF, Contreras CM. which seems to...
  16. S

    Imprecision of Natural Selection

    One way of telling if natural selection has acted on many traits simultaneously is to look for the signatures that natural selection leaves in the genome. This has started to be looked at in humans and it has been found that Darwinian selection has acted on many genes in the human genome that...
  17. S

    Science Knows Nothing about Evolution UR Replies

    Of course the tree is based on the sequences of extant species, a tree of the relationship of human populations would only have nodes as would one of breeds of dog or strains of mice. This criticism has no scientific merit, come on i am sure you really do understand phylogenetic trees. There...
  18. S

    Science knows nothing about Evolution!

    Here is a nice one for seahorses, seadragons and pipefish: Wilson, B. Anthony, Ingrid Ahnesjö, Amanda C.J. Vincent and Axel Meyer (2003). The Dynamics Of Male Brooding, Mating Patterns, And Sex Roles In Pipefishes And Seahorses (Family Syngnathidae) Evolution 57(6): 1374–1386...
  19. S

    Science knows nothing about Evolution!

    Some of the best evidence for macroevolution is the evidence that humans and the other apes share a common ancestor. The evidence for this hypothesis is overwhelming and has never been sucessfully challenged by creationists. Here is a links to some of the evidence for this hypothesis that i...
  20. S

    How to fold a rock

    Did you ever try to fold ice? It's pretty hard. In fact it tends to snap crackle and pop. Below is a picture of an ice fold: Ever wonder how the ice was folded? Was it a slow process like the old-earthers want us to believe? Nope. Remember snap, crackle, pop. The best answer science has...