Natural Selection

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Across
  1. 1. the theory of the evolution of species by natural selection advanced by Charles Darwin.
  2. 3. the action or process of adapting or being adapted.
  3. 6. having the same relation, relative position, or structure, in particular.
  4. 8. the process whereby organisms better adapted to their environment tend to survive and produce more offspring
  5. 9. 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.
Down
  1. 2. the continued existence of organisms that are best adapted to their environment, with the extinction of others, as a concept in the Darwinian theory of evolution.
  2. 3. structures in different species having the same function but have evolved separately, thus do not share common ancestor.
  3. 4. the process by which different kinds of living organisms are thought to have developed
  4. 5. the action or process of mutating.
  5. 7. Breeding the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits