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Genetic migration
Definition:
Genetic migration, in the context of evolutionary biology, refers to the movement of genes or alleles from one population to another. This process can lead to changes in the genetic composition of populations and is a key factor in driving evolution by introducing new genetic variation from one population to another.
The Concept of Genetic Migration in Evolutionary Biology
Genetic migration is a fundamental concept in evolutionary biology that refers to the movement of genes from one population to another. This migration plays a crucial role in shaping the genetic diversity of populations over time, driving evolutionary change and adaptation.
How Genetic Migration Works
Genetic migration occurs when individuals from one population move to another population and interbreed with members of that population. This introduces new genetic variants into the gene pool of the receiving population, altering its genetic makeup.
Key Points:
- Genetic migration is driven by the movement of individuals between populations.
- It introduces new genetic variation into populations, increasing genetic diversity.
- Genetic migration can counteract the effects of genetic drift and natural selection.
Implications for Evolution and Adaptation
Genetic migration is an important driver of evolution as it introduces new genetic material into populations, allowing for the spread of beneficial traits and the removal of harmful mutations. This gene flow can increase the overall fitness of populations and enhance their ability to adapt to changing environments.
By facilitating the exchange of genetic material between populations, genetic migration promotes genetic mixing and reduces the risk of inbreeding, which can lead to genetic disorders and reduced fitness.
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