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The Evidence for Evolution

The Evidence for Evolution

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.

Convergent Evolution

Convergent Evolution

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.

Eukaryotic Evolution

Eukaryotic Evolution

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.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...

Synteny and Evolution

Synteny and Evolution

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.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...

Gene Evolution - Fast or Slow?

Gene Evolution - Fast or Slow?

Gene Evolution - Fast or Slow?

Gene Evolution - Fast or Slow?

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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Updated: Feb 1, 2026

Molecular Evolution of the Tre Recombinase

Molecular Evolution of the Tre Recombinase

Published on: May 29, 2008

Putting Evolution to Work.

Rama Ranganathan¹

¹Center for Physics of Evolving Systems, Department of Biochemistry & Molecular Biology, The Institute for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA.

|December 1, 2018

Summary

This summary is machine-generated.

Three scientists won the Nobel Prize in Chemistry for using laboratory evolution in protein engineering. This groundbreaking technique accelerates the design of novel proteins with desired functions through directed evolution.

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Last Updated: Feb 1, 2026

Molecular Evolution of the Tre Recombinase

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Published on: May 29, 2008

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

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Evolution of Staircase Structures in Diffusive Convection

Evolution of Staircase Structures in Diffusive Convection

Published on: September 5, 2018

Area of Science:

Biochemistry
Molecular Biology
Protein Engineering

Background:

The Nobel Prize in Chemistry 2018 recognized advancements in protein engineering.
Frances Arnold, George P. Smith, and Sir Gregory P. Winter pioneered laboratory evolution techniques.

Purpose of the Study:

To highlight the significance of laboratory evolution for protein engineering.
To underscore the impact of these methods on various applications.
To inspire further research into evolutionary principles for molecular design.

Main Methods:

Application of laboratory evolution (directed evolution) for protein engineering.
Utilizing techniques such as phage display for protein evolution.
Iterative cycles of mutation, selection, and screening.

Main Results:

Successful engineering of proteins with novel and enhanced functions.
Development of powerful tools for protein design and discovery.
Demonstration of the broad applicability of laboratory evolution across diverse fields.

Conclusions:

Laboratory evolution is a transformative approach in protein engineering.
These methods provide a powerful platform for creating custom proteins.
The principles of directed evolution offer insights into general design strategies.