Across
- 2. a genetically determined characteristic
- 7. a group of organisms that are closely related and can mate to produce fertile offspring
- 11. type of virus called a ____ and has a complex replication cycle
- 13. the formation of new species as a result of evolution
- 15. singular,pilus
- 16. when environmental conditions are harsh, some types of bacteria produce a structure called an ____
- 17. the division of a cell into two genetically identical cells
- 18. the viral DNA inserts, or integrates, into a chromosome in a host cell
- 19. a nonliving strand of genetic material within a protein coat
- 20. the host cell makes many copies of the viral RNA or DNA
Down
- 1. sometimes called eubacteria
- 3. the human practice of breeding animals or plants that have certain desired trait
- 4. the process in which inherited characteristics within a population change over generations such that new species sometimes arise
- 5. a characterisitic that improves an individuals ability to survive and reproduce in a particular environment
- 6. some prokaryotes secrete a layer of polysaccharides around the cell wall, forming a ____
- 8. some prokaryotes exhibit a form of reproduction called
- 9. infectious particle or ____
- 10. the outer layer of all viruses is made of proteins
- 12. their genes are found on a large, circular chromosome in an area of the cell called the ____
- 14. the period between the birth of one generation and the birth of the next generation