Search Results for "drift"

SimBac is a software package for simulating bacterial genome evolution. It outputs samples of DNA sequences at each generation & allows testing of major evolutionary mechanisms, including mutation, recombination, genetic drift, and natural selection.

Controversial ideas of Williamson, Margulis & others suggest speciation by hybridizing might be more common than originally thought. Taking this concept to the nth degree & assuming that indeed, speciation mostly occurs by hybridizing events, not the accumulation of mutations or genetic drift, here is a catalogueoflife2gedcom converter. It allows the tree of life to be displayed as a human genealogy tree with hybridizing events depicted as "marriages." The idea then is that mutation accrual & genetic drift are the determining factors for "species maturation," not speciation itself. Unfortunately the Catalogue of Life Project, catalogueoflife.org, changed its database format more recently, so this converter only works on older versions of the data. ...

A small simulator for Mendelian genetics, genetic drift, natural selection and random mutations, built on matplotlib and wxpython. A graph will be generated that traces the distribution of genotypes at successive generations.

SpikeyTree infers divergence times between populations that share a common history described by a tree. SpikeyTree assumes that the populations have been evolving under isolation, according to the Wright-Fisher with pure drift. SpikeyTree can use the Beta or the Beta with Spikes approximation to the allele frequency distribution under the Wright-Fisher. More details can be found in Tataru et al. Inference under a Wright-Fisher model using an accurate beta approximation If using this software in a publication, please cite the above article.