Across
- 3. a random change in a gene
- 5. non random breeding
- 11. useless structures that were once important to a species ancestors
- 13. body parts that are different in structure but same in use
- 14. the species in a specific area
- 15. multiple new species arising from a common ancestor
- 17. relating DNA found in other organisms
- 18. the study of developing embryos
Down
- 1. the influence of closely associated species on each other through out evolution
- 2. body parts that have same structure different use
- 4. the stock of genes in a breeding population
- 6. a species becoming extinct slowly
- 7. bursts of rapid change between periods of little or no change in a species
- 8. a trait that allows a population to survive better
- 9. the remains or impression of a prehistoric creature casted or imprinted on a rock or sedament
- 10. extinction of a species due to a catastrophic event
- 12. the study of bodily structures
- 16. the process of species adapting and changing over time