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Related Concept Videos

Conservation of Small Populations02:04

Conservation of Small Populations

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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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Mutation, Gene Flow, and Genetic Drift01:09

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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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Conservation of Declining Populations02:07

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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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Multi-species Conserved Sequences02:51

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Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
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Hardy-Weinberg Principle01:49

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Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.
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What is Population Genetics?01:25

What is Population Genetics?

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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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Related Experiment Video

Updated: Oct 17, 2025

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid
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Conservation genetics.

Marty Kardos1

  • 1Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98112, USA.

Current Biology : CB
|October 12, 2021
PubMed
Summary
This summary is machine-generated.

Conservation genetics uses genetic tools to combat biodiversity loss caused by human activities like climate change and habitat destruction. This field is crucial for understanding and reversing extinction rates to preserve species.

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Area of Science:

  • Ecology
  • Genetics
  • Conservation Biology

Background:

  • Natural populations face severe threats: climate change, habitat loss, over-harvesting, invasive species, and disease.
  • The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) reports a 50% ecosystem decline and 25% of species threatened with extinction.
  • This biodiversity crisis necessitates scientific tools to understand and mitigate extinction rates.

Purpose of the Study:

  • To provide a historical overview of conservation genetics.
  • To highlight key contributions of genetics to biodiversity preservation.
  • To underscore the importance of genetic principles in conservation efforts.

Main Methods:

  • Review of the historical development of conservation genetics.
  • Identification and discussion of critical applications of genetic methods in conservation.
  • Synthesis of genetic principles relevant to preserving biodiversity.

Main Results:

  • Conservation genetics has evolved significantly as a field.
  • Genetics offers vital tools for characterizing biodiversity.
  • Genetic insights are essential for advancing species preservation strategies.

Conclusions:

  • Genetics is indispensable for addressing the current biodiversity crisis.
  • Understanding population genetics is key to managing extinction risks.
  • Conservation genetics provides a scientific framework for protecting Earth's biodiversity.