Evolution by Natural Selection

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Across
  1. 2. the branch of biology that deals with the geographical distribution of plants and animals.
  2. 7. the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
  3. 8. Selection- ntentional breeding of plants or animals.
  4. 14. Over time and generations the traits providing reproductive advantage become more common within the population.
  5. 17. a change or difference in condition, amount, or level, typically with certain limits.
  6. 19. all the inhabitants of a particular town, area, or country.
  7. 20. the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
Down
  1. 1. evolutionary change within a species or small group of organisms, especially over a short period.
  2. 3. the state or process of a species, family, or larger group being or becoming extinct.
  3. 4. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
  4. 5. major evolutionary change
  5. 6. the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change.
  6. 9. process by which unrelated or distantly related organisms evolve similar body forms, coloration, organs, and adaptations.
  7. 10. the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
  8. 11. variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
  9. 12. Beagle- he Royal Navy Brig that Charles Darwin sailed to the Galapagos on.
  10. 13. seasonal movement of animals from one region to another.
  11. 15. influence of closely associated species on each other in their evolution.
  12. 16. a change or the process of change by which an organism or species becomes better suited to its environment.
  13. 18. the formation of new and distinct species in the course of evolution.