Abstract
Proponents of the gene-duplication hypothesis of evolution argue that a mutation can cause the duplication of a gene that allows one copy of the gene to mutate and evolve to perform a novel function, while allowing the other copy of the gene to continue to perform the original gene's function. Gene duplication is now widely believed by Darwinists to be the main source of all new genes. A review of the evidence shows that there are numerous problems and contradictions in this theory and the empirical evidence indicates that gene duplication has a role in variation within kinds but not in evolution. Darwinists therefore have nothing more to go on than to depend heavily upon extrapolations from gene similarities - a circular argument founded upon the assumption of evolution, and yet another example of evolutionary story telling.