Evolution Crossword Puzzle

5. structure body part found in multiple species that is similar in structure and position but different in function.
6. fossil preserved evidence of the activity of an organism
7. anatomy study of similarities and differences among structures of living species
10. when all individuals of a species have died
11. record set of all the fossils ever discovered on Earth
12. adaptation that enables species to blend in with their environments
16. science of the development of embryos from fertilization to birth
19. resemblance of one species to another species
20. characteristic of a species that enables the species to survive in its environment
22. The study of body structure
24. structure body part that has lost its original function through evolution
25. before fertilization

1. evolution change over time in populations of related organisms.
2. atoms of the same element that have different numbers of neutrons
3. breeding the breeding of organisms for desired characteristics
4. after fertilization
8. similar cells that work together and perform a function
9. slight differences in the appearance of individual members of a species.
13. structure body part found in multiple species that performs a similar function but differs in structure
14. time scale chart that divides Earth's history into different time units
15. A person who studies plants and animals by observing them
17. change in a DNA sequence that affects genetic information
18. speciation The formation of new species in populations that live in the same geographic area
21. selection process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variation
22. speciation The formation of new species in populations that are geographically isolated from one another.
23. impression of an organism in rock
26. fossil copy of an organism in rock