Evolution Crossword Pre-Work

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Across
  1. 2. When new individuals immigrate to a population or individuals emmigrate from a population. They carry their gene with them.
  2. 4. Anatomical features similar in structure but different in function due to species adapting to different environments. Evidence of a common ancestor.
  3. 5. Anatomical features similar in function but different in structure. NOT evidence of a common ancestor.
  4. 10. All of the alleles in a population that code for inherited physical traits
  5. 11. A group of organisms belonging to the same species
  6. 12. Any trait that helps an organism survive and reproduce
  7. 13. When a random chance event is so drastic that it decimates a population and changes its genetic makeup drastically.
  8. 15. Another word to describe diversity or differences in a population
  9. 16. Humans and other species have similar embryos when they're a few weeks old. This is evidence we may have descended from a ____.
  10. 17. The remains of an organism that used to live on Earth.
Down
  1. 1. Anatomical features present in organisms that no longer serve a purpose.
  2. 3. How successful an organism is at reproducing
  3. 6. The idea that individuals who have better adaptations for their environment will survive and reproduce more than others
  4. 7. A random chance event that changes the genetic makeup of a population
  5. 8. A random change in DNA that has the possibility to affect the expression of physical traits
  6. 9. Two organisms are in the same _____ if they can reproduce with eachother and make a fertile offspring
  7. 14. Change over time in a population's inherited physical traits