Across
- 3. Body parts that have seemingly no purpose in an organism but may have had a purpose in that organism some time in the past.
- 5. Different structure, same function
- 8. The study of development of different species as embryos to determine common ancestry.
Down
- 1. The study of distribution of species and ecosystems in geographic space and through geological time.
- 2. Species that are related will have similarities in DNA, RNA, and protein synthesis.
- 4. The idea that all life descended from a common ancestor.
- 6. The total number of fossils that have been discovered. The fossil record is often used to support or disprove a hypothesis.
- 7. Same structure, different function.