Across
- 4. a change in the nucleotide sequence of an organism’s genome
- 5. to change over time
- 6. a part of an organism; also refers to the way parts are put together
- 7. the permanent loss of a population or species
- 9. the process by which the characteristics of a species change over many generations in response to the environment
Down
- 1. relating to genes or heredity
- 2. all of the animals who live in a certain region
- 3. a situation that is observed to exist or happen
- 8. a characteristic or property of an organism