Biology Vocab Crossword

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Across
  1. 8. Proposed that organisms could change their bodies to work better with the environment.
  2. 10. A trait or novel process that helps an organism survive and reproduce.
  3. 11. Preserved remains of previously living organisms.
  4. 12. His theory explains how modern organisms evolved over millions of years.
  5. 14. When no organisms of the species are still alive.
  6. 15. The process of selecting organisms with desired traits to reproduce.
Down
  1. 1. How well an organism can survive in its environment.
  2. 2. The gradual change in a species over time.
  3. 3. The theory that evolution occurs slowly but steadily.
  4. 4. A segment of DNA that gives instructions on the development of a specific trait.
  5. 5. A group of similar organisms that can reproduce with each other.
  6. 6. When individuals of a species are more adapted to their environment and more likely to survive.
  7. 7. The individuals who have the best adaptations will survive and reproduce more than individuals without.
  8. 9. A diagram showing how different species are related.
  9. 13. The last shared ancestor on the branching tree of evolution.