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. 2009 Feb 23;4(2):e4500. doi: 10.1371/journal.pone.0004500

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Roy.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Path repeatability is shown as a function of the probability of neutral changes relative to beneficial mutations (which are assumed to have equal probability), which is roughly equal to 1/2N_es in a haploid population. Results are shown both excluding (upper trace) and including (lower trace) back mutations.