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Evolution and Natural Selection Crossword Puzzle for High School is a hard crossword puzzle with 20 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Evolution and Natural Selection Crossword Puzzle for High School
Challenge your understanding of advanced evolution concepts with this hard-level crossword puzzle. Perfect for grades 9-12 covering natural selection, genetic drift, and speciation.
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Across
  • 1. Structures derived from a common ancestor but with different functions
  • 2. Branching evolution leading to formation of new species
  • 3. Random changes in allele frequencies in small populations
  • 4. Process through which new evolutionary species arise
  • 6. Type of selection maintaining multiple alleles in a population
  • 9. Source of new genetic variation through changes in DNA sequence
  • 11. Type of speciation occurring due to geographic isolation
  • 15. Sum of all alleles in a population's genetic makeup
  • 17. Differences among individuals in a population's traits
  • 19. Proportion of a specific allele among all alleles in a population
Down
  • 5. Process by which favorable traits increase in frequency over generations
  • 7. Reciprocal evolutionary influence between interacting species
  • 8. Theory of natural selection proposed by Charles Darwin
  • 10. Trait that increases an organism's fitness in a specific environment
  • 12. Different versions of a gene found at the same locus
  • 13. Sharp reduction in population size causing genetic drift
  • 14. Evolutionary change within a single lineage over time
  • 16. Accumulation of differences between populations over time
  • 18. Speciation without geographic separation, often via ecological factors
  • 20. Observable characteristics determined by genotype and environment
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