Natural Selection

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Across
  1. 4. Selection Selection by humans for breeding of useful traits from the natural variation among different organisms
  2. 6. An allele that is masked when a dominant allele is present
  3. 7. Selection A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
  4. 9. Describes a trait that covers over, or dominates, another form of that trait.
  5. 10. Ability of an organism to survive and reproduce in its environment
  6. 11. An alternative form of a gene.
Down
  1. 1. change in a DNA sequence that affects genetic information
  2. 2. Darwin English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
  3. 3. Islands Chain of islands near South America where Darwin developed his theory of natural selection by studying the unique life there.
  4. 5. The gradual change in a species over time
  5. 8. A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
  6. 10. The preserved remains or traces of an organism that lived in the past