mechanism of evolution

• Aristotle

  • 350 BCE
  • Species are identical. They tend to remain the same species and can be arranged hierarchically
• George Louis Leclerc

  • AD 1749
  • As a species change, they migrate to another environment resulting in their distribution
• Charles darwin

  • 1974
  • Species evolved from one common ancestor
• Jean baptiste lamarck

  • 1809
  • Species evolved from an existing species through environmental forces. Traits can be passed to the next generation
• Charles Lyell

  • 1830
  • All changes in the environment are uniform and gradual
• Alfred Russel Wallace

  • 1859
  • Species evolved from the process of natural selection which caused variation within the population
• Theory of acquired characteristic


  Tools that an organism experiencing such as modification can transmit just a character to its offspring
• Theory of use and disuse


  Parts of the organism that is regularly used will undergo hypertrophy
• Theory of need


  Changes in the environment can arise to new needs required for species survival
• Survival of the fittest


  Organism adapt to its environment and survive
• Descent with modification


  Species as descended and change over time
• Theory of evolution by artificial selection


  Identification of desirable traits by humans to perpetuate it to future generation
• Theory about evolution by natural selection


  Process through which population of living organisms adapt and change
• Gene flow


  Introduction of genetic material (by interbreeding) from one population of a species to another
• Gin drift


  The frequency of a trait changes by chance randomly
• Mutation


  Jeans are damaged or changed that alter that dna sequence