Prob. fixação por deriva

The "Fixation probability by drift" calculator estimates the chance of a new neutral allele becoming fixed in a population through genetic drift. The formula used is P = 1/(2N), where N is the effective population size. This applies to diploid populations, where each individual has two alleles per locus, and assumes the allele has no selective advantage or disadvantage.

To use the calculator, input the population size (N). The result shows the likelihood the allele will become the only copy in the population over time. In small populations, genetic drift has stronger effects, increasing fixation chances. In large populations, the probability approaches zero, reflecting greater genetic stability.

This calculation is valuable in population genetics studies, such as conservation biology or theoretical simulations. However, the model is simplified. Factors like natural selection, gene flow, and population size fluctuations can affect real-world outcomes not accounted for in this formula.

Note: The 1/(2N) formula applies only to new neutral alleles. If the allele already exists in multiple copies or affects organismal survival, more complex models are required. The calculator provides theoretical foundations but does not replace detailed genetic analysis in applied contexts.