Evolution

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Across
  1. 3. Selection where the average form of the trait has the most fitness. This is illustrated by:
  2. 4. Bacteria evolving & adapting in spurts to become more resistant to antibiotics is an example of this (2words)
  3. 6. Two populations of gray squirrel were separated by a river. This is an example of what type of isolation?
  4. 8. evolution of related species become different as they respond to different environments. Wolves -> dogs
  5. 14. In the NBA, certain players tend to be over 7 foot tall. This is an example what type of selection?
  6. 16. When crickets of the same species that live in the same location make different mating calls this is an example what type of isolation
  7. 17. evolution of species NOT closely related resemble each other b/c similar environments. ex: Sharks & Dolphins
  8. 18. American Toad breeds in the spring. Fowler's Toad breeds in the fall. they have undergone which of the following type of speciation?
Down
  1. 1. Type of selection when species are bred by humans for specific traits. crops or dogs from wolves
  2. 2. selection that favors individuals at both extremes of the trait range
  3. 5. a change in 2 species in close association with each other (bees & flowers they pollinate)
  4. 7. A structure that is present in an organism but no longer serves its original purpose
  5. 9. a change in populations of organisms over time/generations.
  6. 10. The different species of finches on the Galapagos Islands are believed to have arisen as a result of natural selection acting on populations of finches that had experienced (2words)
  7. 11. Features that look & function the same way, but have different skeletal structures (like the wing of a butterfly & the wing of a bird) are called:
  8. 12. A new _____ of organism has evolved when a population can no longer interbreed under natural conditions with other closely related organisms
  9. 13. structures like the wing of a bat & the foreleg of an alligator have the same internal structure but different function.
  10. 15. For a population to be in genetic equilibrium individuals must not enter or leave the population. This is called what? (2words)