Evolution

Learn all about the history of life with these resources and articles on natural selection, genetics, cell types, Charles Darwin, and more.

  • Close-Up Of Young Woman Covering Face With Hands
    Evolution of the Fight or Flight Response
  • The top of a fermentation flask filled with beer
    Aerobic vs. Anaerobic Processes
  • Polar ice melt with polar bear
    Global Climate Change and Evolution
  • Convergent evolution example
    What Is Convergent Evolution?
  • Genotype determines what phenotype is seen in individuals
    Genotype vs Phenotype
  • The Blue-Footed Booby performs its elaborate mating dance, complete with high kicks
    How Prezygotic Isolation Leads to New Species
  • Chalkboard illustration of the progression of evolution.
    The Difference Between Homology and Homoplasy
  • DNA Duplication
    Descent with Modification
  • Human evolution drawn on a chalkboard
    What Is Evolution?
  • A chalkboard drawing of the stages of human evolution
    Gradualism vs. Punctuated Equilibrium
  • A strand of DNA in shades of blue, green, and pink
    DNA and Evolution
  • Embryo development and selection
    What Is Embryology?
  • Coelacanth fossil
    The Basics of Vertebrate Evolution
  • A Labradoodle
    Artificial Selection: Breeding for Desirable Traits
  • Tropical plants
    The Species Concept
  • GMOs may affect evolution
    Genetically Modified Organisms and Evolution
  • DNA
    External Hierarchy of Life
  • Onion root tip mitosis
    Mitosis vs. Meiosis
  • Illustration of Carboniferous Period flora
    The Carboniferous Period
  • Grazing zebras
    Only Populations Can Evolve
  • An Introduction to Evolution
  • The term Darwinism has taken on a negative connotation
    What Is Darwinism?
  • The Scopes trial jury
    Tennessee's Butler Act Criminalized Teaching Evoltuion
  • There are three types of natural selection
    Causes of Microevolution
  • Changes in DNA cause microevolution
    Can Microevolution Lead to Macroevolution?
  • evolution.jpg
    Patterns of Macroevolution
  • Transcription vs. Translation
  • Tree of life
    What Is the Coalescent Theory?
  • Evolutionary Clocks
  • Precambrian
  • Chimpanzee holding keyboard.
    The Controversy of Evolution
  • Beer fermenting in a huge stainless steel container in a brewery
    The Difference Between Fermentation and Anaerobic Respiration
  • Geological time
    The Four Eras of the Geologic Time Scale
  • Nyiragongo volcano
    The 5 Major Mass Extinctions
  • oxygen bubbles floating underwater
    The Oxygen Revolution
  • Chromosome mutation
    The Dobzhansky-Muller Model
  • An artist rendering of prehistoric times
    Periods of the Cenozoic Era
  • Cyanobacteria
    Life on Earth During the Precambrian Time Span
  • Strands of DNA over the earth.
    Origin of Life Theories
  • earth from space
    Tectonic Plates' Effect on Evolution
  • Volcanoes were thought to have contributed to the Triassic-Jurassic mass extinction
    The Triassic-Jurassic Mass Extinction
  • diagrams of eukaryote and prokaryote
    Endosymbiotic Theory: How Eukaryotic Cells Evolve
  • Eukaryotic cells
    The Evolution of Eukaryotic Cells
  • Cambrian Period
    Periods of the Paleozoic Era
  • Artist rendition of the Cenozoic Era.
    The Cenozoic Era Continues Today
  • Extinction of the dinosaurs, artwork
    Cretaceous-Tertiary Mass Extinction
  • Miller–Urey experiment
    Early Life Theories: Primordial Soup
  • Dinosaur called Sue on exhibit
    Mesozoic Era
  • Meteor Shower
    Early Life Theories - Panspermia Theory
  • An illustration of the Zika virus.
    What Happens When Viruses Evolve?
  • Supernovas are how new elements are formed
    Understanding Chemical Evolution
  • Blacksmoker in Atlantic Ocean
    Early Life Theories - Hydrothermal Vents
  • What Is Mass Extinction?
  • Diagram of the human heart
    Evolution of the 4 Heart Chambers in the Human Body
  • Woman smiling, close-up
    The Evolution of Eye Color
  • Hands stopping DNA helix
    How a Genetic Mutation Led to the White 'Race'
  • Human Ancestors - Paranthropus Group
  • Types of Speciation
    Types of Speciation
  • Couple eating lunch outdoors
    Food's Role in the Evolution of the Human Jaw
  • Patient at dentist with open mouth during treatment on teeth
    Human Teeth and Evolution
  • Evolution of human to cyborg
    Primate Evolution: A Look at Adaptations
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