Evolution

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Across
  1. 2. DOMESTICATION: The process of taming an animal or plant for human use.
  2. 3. SELECTIVE BREEDING: Another term for artificial selection.
  3. 5. The struggle between organisms for food, water, or territory.
  4. 7. TRAIT: A specific characteristic of an individual, like eye color or leaf shape.
  5. 8. EXTINCTION: When all members of a species have died out.
  6. 9. GENES: Units of heredity passed from parents to offspring.
  7. 12. VARIATION: The natural differences in traits between individuals of the same species.
  8. 13. The passing of physical or mental characteristics genetically from one generation to another.
  9. 14. The formation of a new and distinct species in the course of evolution.
  10. 15. ANCESTOR: An ancestor shared by two or more descendant species.
  11. 16. SELECTION: The process where organisms best suited to their environment survive and reproduce.
Down
  1. 1. POPULATION: A group of individuals of the same species living in the same area.
  2. 2. FITNESS: An organism's ability to survive and produce offspring.
  3. 3. The process by which populations change over long periods of time.
  4. 4. MUTATION: A random change in DNA that can create new traits.
  5. 6. The remains or traces of an organism that lived long ago.
  6. 8. SELECTION: When humans choose specific traits they want in plants or animals.
  7. 10. A group of similar organisms that can mate and produce fertile offspring.
  8. 11. ADAPTATION: A trait that helps an organism survive and reproduce in its environment.
  9. 12. HOMOLOGOUS: Structures in different species that are similar because of common ancestry.