Across
- 3. an organisms genetic makeup
- 5. the collection of genes in a population
- 7. complete disappearance of a species
- 8. a trait that helps an organism to survive
- 9. organisms with favorable traits to its environment survives longer
- 11. crossover during meiosis
- 15. random change in gene frequency
Down
- 1. the formation of new species
- 2. the ability to survive and reproduce
- 4. change in species over time
- 6. a group of living organisms
- 10. differences between individuals in a population
- 12. random changes in DNA
- 13. an organisms physical traits
- 14. heredity and variation