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Related Concept Videos

The Evidence for Evolution02:55

The Evidence for Evolution

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Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
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Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
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The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
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John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
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Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
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Molecular Evolution of the Tre Recombinase
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Synthetic evolution.

Anna J Simon1, Simon d'Oelsnitz1,2, Andrew D Ellington3,4

  • 1Center for Systems and Synthetic Biology and Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA.

Nature Biotechnology
|June 19, 2019
PubMed
Summary
This summary is machine-generated.

Modern biotechnologies enable precise gene editing and targeted mutations, accelerating evolution for desired traits. This approach focuses on beneficial genetic changes, mimicking natural selection but with enhanced speed and efficiency.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Advanced biotechnologies like DNA synthesis, recombineering, and CRISPR gene editing are revolutionizing biological research.
  • These tools allow for unprecedented precision in manipulating genetic material.

Purpose of the Study:

  • To explore the potential of modern biotechnologies for targeted genetic manipulation.
  • To investigate how these technologies can accelerate evolutionary processes.

Main Methods:

  • Utilizing DNA synthesis for creating genetic material.
  • Employing λ red recombineering and CRISPR-based editing for precise gene modification.
  • Leveraging next-generation high-throughput sequencing for analysis.

Main Results:

  • Demonstrated the capability to introduce multiple mutations in a targeted manner.
  • Showcased the acceleration of evolutionary processes by focusing mutations and selection.
  • Reduced fitness burdens associated with traditional evolutionary methods.

Conclusions:

  • Modern biotechnologies offer powerful tools for directed evolution.
  • Targeted genetic manipulation can significantly speed up the development of desired phenotypes.
  • These advancements represent a paradigm shift in evolutionary biology and synthetic biology.