Natural Selection Vocab

123456789101112131415
Across
  1. 2. Diversity of genes within a species of organisms.
  2. 5. The selection and breeding of organisms for desired traits.
  3. 7. A slight difference in an inherited trait among individual members of a species.
  4. 8. An adaptation that enables a species to blend in with its environment.
  5. 9. The formation of a new species because the previous population can no longer breed with each other.
  6. 12. A change in a gene. Can be positive or negative.
  7. 13. A person who studies plants and animals by observing them.
  8. 14. The quality of an organism being suitable to its environment so that it survives and reproduces.
  9. 15. Process by which organisms change over time as those with traits best suited to their environment survive.
Down
  1. 1. Process by which organisms expand into new environments and are forced to adapt to their new surroundings.
  2. 3. Organisms with the most desirable traits survive; those who struggle for existence are the unfit.
  3. 4. Changes in the gene pool of a population from generation to generation by natural selection.
  4. 6. A class of related individuals having common characteristics and are able to breed among themselves.
  5. 10. Any variation that makes an organism better suited to its environment.
  6. 11. An adaptation in which one species looks like another species (animals or plants).