Retrieving "Genetic Diversity" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Gene Flow

   Linked via "genetic diversity"

   Gene flow acts as a major impediment to local adaptation driven by natural selection. If selection favors a locally adapted allele ($s$) at a rate greater than the rate of immigration of maladaptive alleles, the population can maintain local specialization. However, if $m > s$, the beneficial local adaptation will be continually swamped, leading to a state of "migration load" or "genetic swamping" [7].
   It is a recurrent observation in ecology that popula…

2. Gene Flow

   Linked via "genetic diversity"

   | :--- | :--- | :--- |
   | $F{ST}$ | Fixation Index; measures genetic differentiation between populations. | Lower $F{ST}$ values generally indicate higher historic gene flow. Values near zero suggest complete panmixia. |
   | $G{ST}$ | Nei's measure of genetic diversity partitioning. | Useful for comparing migration rates across multiple species pairs, as it is less sensitive to heterozygosity variation than $F{ST}$. |
   | $N_m$ | Effective [number …

3. Genetic Drift

   Linked via "genetic diversity"

   Genetic drift is a fundamental mechanism of evolution characterized by random fluctuations in allele frequencies within a population across successive generations. Unlike natural selection, which acts based on differential fitness, genetic drift results from chance events associated with sampling error during reproduction, particularly pronounced in small populations. Its effects are stochastic and dir…