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Related Concept Videos

Convergent Evolution01:54

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.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
The Evidence for Evolution02:55

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.The collection of fossils within sedimentary rocks give a record of common ancestry and often depicts the history of evolution.
Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...
Speciation Rates01:07

Speciation Rates

Speciation can proceed at markedly different rates, and evolutionary biologists commonly describe these differences through the models of gradualism and punctuated equilibrium. Both patterns explain how new species arise, but they differ in the tempo and continuity of evolutionary change. In both cases, evolutionary change arises from heritable variation within populations, with natural selection often shaping traits that improve survival and reproduction under specific environmental conditions.
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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...
Synteny and Evolution02:31

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 chromosome underwent...

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Related Experiment Video

Updated: Jun 15, 2026

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

Convergent evolution: pick your poison carefully.

Edmund D Brodie1

  • 1Mountain Lake Biological Station, Department of Biology, University of Virginia, Charlottesville, VA 22904, USA. bbrodie@virginia.edu

Current Biology : CB
|February 25, 2010
PubMed
Summary
This summary is machine-generated.

Convergent evolution shaped venom proteins in mammals and lizards, leading to similar serine protease structures. In frogs, the toxin caerulein also evolved multiple times independently.

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Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
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Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

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Last Updated: Jun 15, 2026

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
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Area of Science:

  • Evolutionary biology
  • Biochemistry
  • Genomics

Background:

  • Independent evolution of complex traits can lead to convergent solutions.
  • Venom systems are key models for studying rapid evolution and molecular adaptation.

Discussion:

  • Genomic and biochemical analyses demonstrate convergent evolution in serine protease venom structures between mammals and lizards.
  • Identical toxin structures, like caerulein in frogs, have arisen multiple times independently from unique genetic origins.

Key Insights:

  • Convergent evolution can produce nearly identical protein structures from different genetic starting points.
  • Independent evolution of toxins highlights functional constraints and adaptive pressures in venom systems.

Outlook:

  • Further research can explore the specific genetic and molecular mechanisms driving venom convergence.
  • Comparative studies across diverse taxa can reveal broader patterns of toxin evolution.