Natural Selection

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Across
  1. 2. English naturalist; put forth theory of natural selection to serve as the mechanism for how evolution occurs.
  2. 7. French naturalist; put forth idea that acquired traits are heritable.
  3. 8. A measure of how well an organism can survive in its environment.
  4. 10. Individuals do not evolve, _____ do!
  5. 11. Organisms with the best traits (adaptations) will live longer and reproduce more than others, causing changes in a population over time by acting on traits that are heritable.
Down
  1. 1. An inherited characteristic that increases an organism's chance of survival.
  2. 3. The process of biological change by which descendants come to differ genetically from their ancestors.
  3. 4. Able to be passed from one generation to the next.
  4. 5. The combined alleles of all individuals in a population.
  5. 6. The ultimate source of variation on Earth.
  6. 9. Differences in the physical traits of organisms.