Across
- 2. the accumulated random mutations within the DNA of a population of organisms.
- 3. a supposed organism of the past with body parts that are intermediate between early ancestral forms and later fully developed forms.
- 5. a distinct group of organisms that God created to reproduce
- 7. according to evolutionary theory no longer has a function
- 9. features that are shared by distinct types of organisms
- 10. model of evolution that blends mutations and natural selection
- 12. traits that allow individuals to survive and reproduce better than others individuals without those traits will become more common in the population
- 13. the preserved remains of plants and animals
Down
- 1. a species of organism whose descendants are believed to form two distinct species
- 4. Random changes in DNA
- 6. the concept that all of Earth's physical processes happened at the same rate in the present time as they did in the past
- 8. the model that states that simpler organisms have slowly changed into new and more complex organisms over millions of years
- 11. the process used to estimate the age of rocks
