Evolution Vocabulary

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Across
  1. 4. Form of natural selection in which individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
  2. 7. Separation of a species or population that they no longer interbreed and evolve into separate species.
  3. 8. Body parts that share a common function, but not an evolutionary history
  4. 12. How well an organism can survive and reproduce in its environment
  5. 13. Form of reproductive isolation in which two populations are separated physically by geographic barriers such as rivers, mountains, or stretches of water, leading to the formation of two separate subspecies
  6. 14. Structures that are similar in different species of common ancestry
  7. 15. Study of past and present distribution of organisms
  8. 16. The selection of mates based on heritable traits
  9. 17. Selective breeding of plants and animals to promote the occurrence of desirable traits in offspring
  10. 18. Formation of new species
  11. 19. Process by which organisms that are most suited to their environment survive and reproduce most successfully; also called survival of the fittest
Down
  1. 1. Natural selection in which individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle of the curve
  2. 2. Form of natural selection in which individuals near the center of the distribution curve have higher fitness than individuals at either end of the curve
  3. 3. Form of reproductive isolation in which two or more species reproduce at different times
  4. 5. Change over time; the process by which modern organisms have descended from ancient organisms
  5. 6. Number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
  6. 9. Structure that is inherited from ancestors but which has lost most of all of its original functions
  7. 10. Form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding
  8. 11. Preserved remains, or traces of, ancient organisms
  9. 17. Heritable characteristic that increases an organism's ability to survive and reproduce in an environment