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For Educators · Mutation–Selection

Mutation–Selection for a blood flow

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a blood flow live below — adjust the inputs and watch it respond, right in your browser.

Mutation–Selection BalanceLive

evolution of an allele

Controls

Presets

Selection coefficient s

Mutation rate µ

Starting frequency p₀

Selection pushes a favorable allele toward fixation, while mutation keeps feeding the alternative back in. The two forces settle at a mutation–selection balance — which is why harmful alleles never fully disappear from a population. Educational tool.

▶ Run in Python

Data Inspector

Equilibrium frequency0.043

Directionfalling

Governing equation

\overset{q}{^} = \frac{μ}{s} = \frac{0.001}{0.1} = 0.100

Reading this result: Selection pushes the allele up while mutation feeds the alternative back in; they settle at the equilibrium frequency shown.

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Frequently asked questions

Is this good for educators?: Yes — this version of "Mutation–Selection for a blood flow" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.