Across
- 3. all known fossils and place in time
- 4. body parts that have no function in their present-day form
- 9. parts of organisms that are similar in origin and structure
- 10. the study of the growth and development of offspring from fertilization to birth
Down
- 1. if species inherited many of the same genes from a common ancestor, them they would have similar body structures and development
- 2. the study of the similarities and differences in the physical structure of things
- 5. a chart that shows evolutionary relationships (who is related to who)
- 6. parts that look similar, but are passed down from different ancestors
- 7. a previous species that two different species have evolved from
- 8. genetic change in a population over time