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Related Concept Videos

Synteny and Evolution02:31

Synteny and Evolution

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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.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
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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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The Evidence for Evolution02:55

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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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Evolutionary Relationships through Genome Comparisons02:54

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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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In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
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An important concept in studying metabolism and energy is that of chemical equilibrium. Most chemical reactions are reversible. They can proceed in both directions, releasing energy into their environment in one direction, and absorbing it from the environment in the other direction. The same is true for the chemical reactions involved in cell metabolism, such as the breaking down and building up of proteins into and from individual amino acids, respectively. Reactants within a closed system...
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A Theoretical Framework for Evolutionary Cell Biology.

Michael Lynch1, Bogi Trickovic1

  • 1Biodesign Center for Mechanisms of Evolution, Arizona State University, Tempe, AZ, 85287, USA.

Journal of Molecular Biology
|February 23, 2020
PubMed
Summary
This summary is machine-generated.

Evolutionary biology and cell biology are linked, with cell biology providing the mechanism for evolutionary change. New quantitative frameworks can unify evolutionary theory across species by analyzing phenotype distributions and cellular energy costs.

Keywords:
bacterial envelopebioenergetic costscell motilityevolutionary cell biologypopulation genetics

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Area of Science:

  • Evolutionary Biology
  • Cell Biology
  • Theoretical Biology

Background:

  • The link between cell biology and evolutionary biology remains largely uncharted.
  • Understanding cellular mechanisms is crucial for a mechanism-based theory of evolution.
  • Advances in cell biology offer potential for rapid progress in this field.

Purpose of the Study:

  • To establish a quantitative framework for evolutionary biology that integrates cell biology.
  • To bridge the gap between cellular processes and evolutionary theory across species.

Main Methods:

  • Developing theoretical platforms for evolutionary biology.
  • Establishing the long-term steady-state distribution of mean phenotypes under mutation, selection, and drift.
  • Evaluating the energetic costs of cellular structures and functions.

Main Results:

  • The study presents two theoretical approaches to quantitatively link cell biology and evolution.
  • These frameworks aim to provide insights into diverse biological problems.

Conclusions:

  • A quantitative framework integrating cell biology is essential for advancing evolutionary theory.
  • The proposed theoretical platforms can illuminate unsolved problems in areas like genome structure, cellular architecture, and organismal motility.