Genetic Drift Calculator
Calculate the effects of genetic drift on allele frequencies in finite populations.
Population Parameters
Key Concept
Genetic drift causes random changes in allele frequency, with stronger effects in smaller populations. Drift rate = 1/(2N) per generation.
Drift Effects
Drift Rate
0.5000%
per generation
After 50 gens
22.17%
heterozygosity lost
Fixation Probabilities
Probability of Fixation50.00%
Probability of Loss50.00%
Expected Time to Fix277 gens
Expected Time to Loss277 gens
Frequency Distribution
Variance per Generation0.001250
SD after 50 gens0.2354
95% CI Range[0.0386, 0.9614]
Heterozygosity Retention
0%
100%
77.83% remaining
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.