Challenging puzzle for experienced crossword solvers
Evolutionary Threads of Life's Diversity
Moderate difficulty suitable for most players
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Across
- 1. Differences in traits within a population
- 2. Random genetic change that can introduce variation
- 3. Preserved remains or impressions of ancient life
- 5. Change in traits that helps survival in new environments
- 7. Group of organisms capable of interbreeding successfully
- 9. Alternate form of a gene found at the same locus
Down
- 4. Type of selection that favors survival of the fittest
- 6. Ability to continue living despite environmental pressures
- 8. Evolutionary development and relationships of a species
- 10. Process of lineage passing traits through generations
- 11. Unit of heredity passed from parents to offspring
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