Natural Selection

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Across
  1. 3. the basic unit of heredity carried by the chromosomes; codes for proteins which determine the traits of an organism
  2. 4. well-tested explanation of natural phenomena
  3. 6. a thing that gives rise to an event "because of this, there is a result."
  4. 12. inherited trait or behavior that increases an organism’schance of surviving long enough to reproduce
  5. 13. the range of expression of a trait within a population
  6. 14. an explanation or assumption that people make based on their knowledge, experiences, or opinions
Down
  1. 1. an event or result
  2. 2. process by which the individuals best adapted to their environment tend to survive and pass their traits to subsequent generations.
  3. 5. theory that all species are descended from common ancestors who have changed over time by means of natural selection
  4. 7. the process responsible for a phenomenon; explains how we join the cause and effect together
  5. 8. Any random error in an organism's DNA
  6. 9. a set of components working together
  7. 10. a vertebrate with four limbs
  8. 11. populations whose members do not interbreed with members of other populations