// multi-utility computation suite · offline · instant · precise
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sci.QST-FST-genetic-divergence Calculator
Calculates QST (quantitative trait variation among populations) and compares to FST (neutral marker divergence) to detect natural selection on polygenic traits. QST > FST suggests directional selection driving population divergence; QST < FST suggests stabilising selection or constraint — the test requires at least 5–6 populations for power.
Inputs
Va Between
The square of standard deviation. Less intuitive than SD (units are squared), but used in many statistical formulas.
Va Within
The square of standard deviation. Less intuitive than SD (units are squared), but used in many statistical formulas.
Results
QST
Reference formula or conversion factor shown for context.
QST interpretation
Qualitative summary of what the computed numbers mean in practical terms.
QST = Vb/(Vb + 2Vw)
Reference formula or conversion factor shown for context.
FST reference (neutral)
Sample size or count used in the calculation.
QST−FST test
Reference formula or conversion factor shown for context.
application
Recommended use case or application for this configuration or result.