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Related Concept Videos

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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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 Evolution - Fast or Slow?02:05

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Gene Evolution - Fast or Slow?02:05

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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
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Genome Size and the Evolution of New Genes03:21

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Genome Size and the Evolution of New Genes03:21

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While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
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Genetic Variation01:25

Genetic Variation

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Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
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Related Experiment Video

Updated: Apr 10, 2026

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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Genome watch. Adaptation: it's a bug's race.

Arporn Wangwiwatsin1, Anna V Protasio1

  • 1Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.

Nature Reviews. Microbiology
|June 16, 2015
PubMed
Summary

This month's Genome Watch covers research on Wolbachia bacteria, examining how different Wolbachia genotypes relate to observable traits and how these bacteria adapt to new host environments.

Area of Science:

  • Microbiology
  • Genetics
  • Evolutionary Biology

Background:

  • Wolbachia are intracellular bacteria that infect a wide range of arthropods.
  • These bacteria can influence host reproduction and evolution.
  • Understanding Wolbachia-host interactions is crucial for various fields, including pest control and disease vector management.

Purpose of the Study:

  • To highlight recent research on the genotype-phenotype relationships of Wolbachia.
  • To explore the adaptive mechanisms of Wolbachia in novel host environments.
  • To provide an overview of current advancements in Wolbachia research.

Main Methods:

  • Review of recently published studies in genetics and microbiology.
  • Analysis of experimental and observational data on Wolbachia infections.

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  • Comparative genomics and evolutionary analyses.

    • Main Results:

    • Studies reveal significant correlations between specific Wolbachia genotypes and host phenotypes.
    • Evidence suggests rapid adaptation of Wolbachia to new host niches.
    • Genotypic variations influence the impact of Wolbachia on host fitness and reproduction.

    Conclusions:

    • Wolbachia genotype is a key determinant of its phenotypic effects.
    • Wolbachia exhibits remarkable adaptability to diverse host environments.
    • Continued research is vital for harnessing Wolbachia for beneficial applications.