Migration / Gene Flow Simulator
Simulates allele frequency change when migrants enter a focal population. Each generation, a fraction m of the population is replaced by migrants with allele frequency pm.
Migration step: p′ = (1 − m₁ − m₂)p + m₁pm1 + m₂pm2 | q′ = 1 − p′
p + q = 1 | pm1 + qm1 = 1 | pm2 + qm2 = 1 | 0 ≤ m₁ + m₂ ≤ 1
p + q = 1 | pm1 + qm1 = 1 | pm2 + qm2 = 1 | 0 ≤ m₁ + m₂ ≤ 1
Inputs
Focal Population
Migrant Population 1
Migrant Population 2 (Optional)
If m₂ = 0, the second migrant population has no effect on the focal population.
Simulation Length
This simulator is deterministic. Under repeated migration, the focal population moves toward the migrant allele frequency over time.
Results
Check pending
Starting p
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Migrant pₘ₁ / pₘ₂
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m₁ / m₂
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Final p
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Final q
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Generations Simulated
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Interpretation
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Allele A (p)
Allele a (q)
Migrant pₘ₁
Migrant pₘ₂
| Generation | p | q | p² | 2pq | q² | p(next) | q(next) | |p − pₘ₁| | |p − pₘ₂| |
|---|---|---|---|---|---|---|---|---|---|
| No simulation yet | |||||||||