Unit 4 Vocab Part B

1. Structure in different species that have a similar function but may have different structures.
3. When species are reproductively isolated because of their different behaviors.
4. Preserved remains of ancient past organisms.
7. 2 populations reproduce at different times so they’re unable to interbreed.
8. Genetic differences accumulating over time between populations of a species.
9. A change in DNA
12. Body parts that have lost their original function through evolution.
14. The process by which new species are generated.
15. The parts involved in reproducing offspring don’t work between a species.
16. Change over time
17. How reproductively successful an organism is
18. Structures in different species that have a similar structure but may have different functions.
19. Humans choose what traits in organisms they like and breed them instead of letting it naturally happen.
20. Groups of organisms being unable to reproduce because of their different environment.

2. Organisms best adapted to their environment remain while others become extinct
5. Populations of organisms separated because of geographical barriers.
6. Coincidental biological evolution
10. Traits that improve survival and reproduction are continued to be reproduced in future offspring.
11. DNA sequence that codes for a trait
13. The disappearance of a species from earth
21. A passed on trait that increases an organisms fitness