Evolution and Adaptation Puzzle

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Across
  1. 5. Darwin-English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
  2. 7. (scientific)-the variability among living organisms from all sources
  3. 9. Pool-consists of all genes, including all the different alleles, that are present in a population
  4. 12. person, typically one more remote than a grandparent, from whom one is descended.
  5. 14. with modification-passing traits from parent to offspring, and this concept is one of the fundamental ideas behind Charles Darwin's theory of evolution
  6. 17. end of a species
  7. 19. - a change by which an organism or species becomes better suited to its environment
  8. 21. variation-biological systems – individuals and populations – are different over space.
  9. 22. structure-parts of an organism that are no longer functioning and do not affect survival
Down
  1. 1. record-the millions of fossils that scientists have collected
  2. 2. analysis- using DNA samples to distinguish and identify individuals.
  3. 3. selection - selective breeding of domesticated plants and animals to produce offspring with desired genetic traits
  4. 4. of Evidence -At the heart of evolutionary theory is the basic idea that life has existed for billions of years and has changed over time.
  5. 6. Structures-same ancestor, different function, similar structure
  6. 8. Anatomy -the study of similarities and differences in the anatomy of different species
  7. 10. remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil.
  8. 11. animal of a large group distinguished by the possession of a backbone or spinal column
  9. 13. rock-A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
  10. 15. gradual process by which something changes into a different form
  11. 16. structures-different ancestor, similar function, different structure
  12. 18. selection-a natural process resulting in the evolution of organisms best adapted to the environment
  13. 20. group of a type of organisms or animals