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Ecological genetics, also known as genecology, is a branch of ecology that studies the genetic variation within species and how it relates to their environment. It examines how genetic differences among populations influence their morphology, physiology, behavior, and life histories.12

Key aspects include:
* Genetic Variation: The amount of genetic variation within populations is crucial. Sexual reproduction leads to greater genetic diversity through gene recombination, while asexual reproduction results in offspring genetically identical to the parent, with mutation being the primary source of new variation.2
* Population Size: Larger populations tend to sustain genetic variation better than smaller ones, where genetic drift can lead to the loss of alleles.3
* Natural Selection: This process favors individuals with phenotypes best suited to their environment, influencing the gene pool by promoting the survival and reproduction of those with advantageous traits.2
* Conservation Biology: A significant focus of conservation biology is maintaining genetic diversity within and among populations to help species adapt to changing environments.23

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