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Semester 1 Biology (evolution (mechanisms of evolution (causes for…

- - - - Divergent Evolution is when species adapt differently to the environment, causing two different species
      - Coevolution is when two organisms evolve together to better survive
      - Convergent Evolution is when different species evolve similar things
    - - The Founder effect is when some organisms start their own population
      - The Bottleneck effect is when only a few organisms survive to reproduce
      - gene flow is the
    - - Geographical isolation is when species are epperated so they can’t mate
      - Temporal isolation is when species mate at different times of the year
      - Isolation causes evolution
      - Behavioral isolation is when species behave differently to attract a mate
  - - - younger fossils are found towards the surface
      - older fossils are found deeper into the crust
    - - analogous structures are different to another animal's structure, but serves the same function. The two animals had different ancestors, but similarly evolved.
      - homologous structures are similar to other animal structures, but have different purposes, the two animals must have had a common ancestor, but evolved differently
      - vestigial structures are ones without purpose. An animal's ancestor might have needed a tail, but the animal today does not. So the animal today has a tailbone, but no tail.