Is this good for educators?

Yes — this version of "Phylogenetic Distance for a heartbeat" 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.

For Educators · Phylogenetic Distance

Phylogenetic Distance for a heartbeat

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 heartbeat live below — adjust the inputs and watch it respond, right in your browser.

Phylogenetic DistanceLive

turning mutations into a tree

Seq A: ...ACGTACGTTACG...

Seq B: ...ACGTGCGTCACG...

Controls

Presets

Sequence length (bp)

Observed differences

The more two DNA sequences differ, the longer ago they shared an ancestor. But raw differences undercount, because a site can mutate more than once. The Jukes–Cantor correction inflates the raw distance to estimate the true number of substitutions per site. Educational tool.

▶ Run in Python

Data Inspector

Percent identity85.0%

Raw distance p0.150

Jukes–Cantor distance0.167

Est. divergence17 (relative)

Governing equation

d = - \frac{3}{4} ln (1 - \frac{4}{3} \cdot 0.150) = 0.167 subs/site

Reading this result: About 15.0% of sites differ, and the Jukes–Cantor correction inflates that to 0.167 substitutions per site to account for hidden multiple hits.

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Frequently asked questions

Is this good for educators?: Yes — this version of "Phylogenetic Distance for a heartbeat" 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.