Natural Selection

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Across
  1. 2. A species changes over time.
  2. 4. A permanent change in the DNA sequence of an organism that makes up a gene that's different from other organisms in its species..
  3. 6. A trait that becomes more frequent over time because it's an adaptation.
  4. 7. Adaptations are inherited or learned.
  5. 10. The intentional breeding of organisms by humans to produce organisms with desired traits.
Down
  1. 1. When humans control how a species changes by selective breeding.
  2. 3. A species that has different traits.
  3. 5. When a trait of an organism in a species helps it survive.
  4. 8. When not every individual organism in a species will survive long enough to reproduce.
  5. 9. An organism's ability to survive and reproduce frequently.