Across
- 7. A heritable trait that increases an organism's fitness in its environment.
- 8. Change in the inherited traits of a population over generations.
Down
- 1. The process by which organisms with traits better suited to their environment tend to survive and reproduce more successfully.
- 2. Differences in traits among individuals within a population.
- 3. A group of organisms that can interbreed and produce fertile offspring.
- 4. A change in the DNA sequence.
- 5. The scientist who developed the theory of evolution by natural selection.
- 6. A group of individuals of the same species living in the same area.