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  1. Jacana

    What is a species?

    Yup, speciation is a messy, complex process which rarely follows the same path from one circumstance to the next.
  2. Jacana

    What is a species?

    Yep, there's a confusion here between genetic change and mutation rates. Frank gets it right, mutations are basically random, but some base pair combinations in some parts of the chromosomes are more likely to mutate than others. Genetic change is a more woolly concept, that suggests that...
  3. Jacana

    What is a species?

    This is an assumption that is not safe to make. Mutations might be random(ish), but genetic change is far more than just random drift, especially in island biogeography settings. There's often a founder effect, whereby only a subset of genetic variation of the whole population reaches a new...
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