Evolution

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Across
  1. 3. The genetic makeup of an organism.
  2. 4. A group of organisms that can interbreed and produce fertile offspring.
  3. 10. Structures in different species that serve similar functions but do not share a common ancestry.
  4. 12. Diversity The variety of life forms within a specific environment or on Earth.
  5. 13. The scientific study of fossils and ancient life forms.
  6. 15. Variation Differences in the genetic makeup of individuals within a population.
  7. 17. A change in the DNA sequence of an organism, which can lead to new traits.
  8. 19. The complete disappearance of a species from the Earth.
  9. 21. Niche The role and position of an organism in its environment.
  10. 23. Ancestor An organism that is the shared ancestor of two or more species.
  11. 24. The observable physical or biochemical characteristics of an organism.
  12. 25. A trait or characteristic that helps an organism survive and reproduce in its environment.
Down
  1. 1. The collection of all known fossils, providing evidence of the history of life on Earth.
  2. 2. Flow The transfer of genes from one population to another through migration or other means.
  3. 5. Pressure Factors in the environment that influence individuals' survival and reproductive success.
  4. 6. Selection The process by which organisms better adapted to their environment tend to survive and produce more offspring.
  5. 7. The accumulation of differences between groups, leading to the formation of new species.
  6. 8. Equilibrium Evolution occurs in short bursts of rapid change followed by long periods of stability.
  7. 9. Breeding The process of breeding plants and animals for specific traits.
  8. 11. The process by which new species evolve.
  9. 14. Organs Structures in organisms that have lost their original function through evolution.
  10. 16. Drift Changes in the frequency of a gene variant in a population due to random events.
  11. 18. The gradual change in living organisms over time, often leading to the development of new species.
  12. 20. Similar structures in different species that indicate a common ancestry.
  13. 22. The independent evolution of similar traits in different species.