Artificial selection reveals complex genetic architecture of shoot branching and its response to nitrate supply in Arabidopsis.

Despite some expected fluctuation, the probability that an individual from the selected population had a higher number of branches than one from the random population was >50%, with an increasing trend across the generations for both HN and LN in all 3 replicate populations ( S2 Fig ).

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If this happened consistently across selection replicates, the locus would likely be highly significant by any of the standard evolve-and-resequence tests (reviewed recently by Schlötterer and colleagues), but would show minimal signal in He.

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