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1. Genetic Drift

   Linked via "evolutionary force"

   where $p$ is the current allele frequency.
   When $Ne$ is small, the term $1/(2Ne)$ becomes large, leading to rapid and substantial fluctuations in allele frequencies. Conversely, in populations where $N_e$ approaches infinity, the effect of drift approaches zero, making selection the dominant evolutionary force. This relationship explains why populations recovering from population bottlenecks or existing in geographically isolated, small metapopulations are highly sus…

2. Genetic Drift

   Linked via "evolutionary forces"

   Drift in Relation to Selection and Gene Flow
   Genetic drift interacts dynamically with other evolutionary forces, often counteracting or overwhelming them, particularly in small effective populations.
   Counteracting Selection