Across
- 3. A large group of single-cell microorganisms
- 6. when a population is greatly reduced in size, limiting the genetic diversity of the species
- 7. stage where a virus feeds off of the host cell
- 8. Structures that have no apparent function
- 12. body parts of organisms that have the same anatomical features
- 13. two or more species that affect each others evolution
- 16. the process by which interbreeding species diverged into two or more evolutionary groups
- 17. the basic unit of heredity passed from parent to child
- 18. heritable trait that helps and organism
- 19. the dying out of a species
- 20. the disintegration of a cell by disruption of its plasma membrane
Down
- 1. One of two or more DNA sequences occurring at a particular gene locus.
- 2. new species of plant and animals created
- 4. occurring or formed without the production and union of two kinds of gametes
- 5. remains of plants and animals
- 9. study of the embryo
- 10. changes in the heritable traits of a species over time
- 11. drug used to treat bacterial infections
- 14. infectious microbe
- 15. similarity of function and superficial resemblance of structures that have different origins