principals of evolution zoo

five principles of evolution

• Perpetual change

  • Life on the planet changes generation from generation

  • Getting flu shot every year

• Common descent

  • 4 limbs of species

  • Many species share bone types 

• Multiplication of species

  • Speciation

    • Allopatric

      • In another land

      • Isolating mechanism that separates two populations

        • River separating the same species of fish

    • Adaptive radiation

      • The shape of the bill of finches for what they are hunting for

• Gradualism

  • Small incremental change happens

modern evolution theory

• Gregor Mendel 

  • Austrian monk

  • Father of genetics

  • Genetics plus natural selection

• Macroevolution

  • Macro and time

  • Adaptation

    • Any inheritable trait that provides higher fitness

  • Convergent evolution

    • Two distant-related things look the same

      • Flies, birds, and bats

  • Stasis

    • Long periods of no change

  • Speciation

    • Divergent evolution

  • Mass extinction

• Microevolution

  • How is genetic variation produced, maintained, and lost

    • Genetic drift

    • Non-random mating

    • Migration

    • Natural selection

    • Mutation