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Related Concept Videos

Genetics of Speciation02:16

Genetics of Speciation

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Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Gene Flow02:39

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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
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What is Population Genetics?01:25

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A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
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Genetic Drift03:33

Genetic Drift

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Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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The evolution of landscape genetics.

K Petren

    Evolution; International Journal of Organic Evolution
    |January 22, 2014
    PubMed
    Summary

    Landscape genetics integrates evolutionary processes with spatial patterns. New technologies enable empirical tests of adaptive evolution in natural landscapes, revealing complex interactions.

    Area of Science:

    • Evolutionary biology
    • Population genetics
    • Landscape genetics

    Background:

    • Landscape genetics investigates how landscape structure influences evolutionary processes, building on foundational population genetics theory.
    • Empirical studies testing adaptive evolution in natural landscapes have historically been limited.
    • Recent technological and methodological advancements are enabling new research avenues.

    Discussion:

    • The integration of landscape genetics offers a transformative perspective on studying evolution.
    • This field examines the interplay between migration, population structure, and evolutionary trajectories.
    • The study of evolutionary processes in natural landscapes is becoming increasingly tractable.

    Key Insights:

    • Advanced tools allow for tracing adaptive genetic variation across spatial and temporal scales.

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  • Expect a rise in empirical validation of classical evolutionary theories.
  • New evolutionary phenomena are anticipated as complex landscape-driven interactions are uncovered.

    • Outlook:

    • Future research will focus on the dynamic interactions between evolutionary processes and landscape features.
    • The field is poised to reveal novel insights into adaptation and speciation in natural populations.
    • Technological progress will drive a deeper understanding of evolution in real-world ecological contexts.