Across
- 5. the ability of an organism to survive and reproduce
- 7. the process by which individuals with inherited characteristics more suited to the environment have more offspring
- 11. when the living organisms produce more offspring than can survive
Down
- 1. structures that may have had an important function in ancestral species but no longer serve a purpose
- 2. only the organisms bested suited to their environment will survive
- 3. the differences in characteristics between individuals of the same species
- 4. structures that serve similar functions but have different evolutionary paths
- 6. a change in the DNA sequence of a chromosome
- 8. the change in a species as a whole gradually over time
- 9. an inherited characteristic that improves an organism's ability to survive and reproduce
- 10. structures that originate from the same type of tissue