Evolution and Natural Selection
Across
- 6. asexual reproduction by a separation of the body into two new bodies
- 7. a normal process in which genetic material is rearranged as a cell is getting ready to divide
- 10. when two or more species reciprocally affect each other's evolution through the process of natural selection
- 12. a change or difference in the trait
- 15. a change or the process of change by which an organism or species becomes better suited to its environment
- 17. the process through which populations of living organisms adapt and change.
- 18. the movement of genes into or out of a population
- 19. a diverse domain of organisms whose cells have a nucleus
- 20. type of structural modification made to a part of the body
Down
- 1. the dying out or extermination of a species
- 2. the population number is dramatically decreased as a result of natural disasters such as earthquakes, floods, and other natural disasters
- 3. single-celled organisms belonging to the domains Bacteria and Archaea
- 4. a mode of reproduction in which a new offspring is produced by a single parent
- 5. occurs when bacteria change in response to the use of these medicines
- 8. something an animal does usually in response to some type of external stimulus in order to survive
- 9. the change in the frequency of an existing gene variant in a population due to random chance
- 11. A large group of single-cell microorganisms
- 13. a new population is established by a very small number of individuals from a larger population
- 14. type of reproduction that involves a complex life cycle in which a gamete with a single set of chromosomes combines with another gamete to produce a zygote
- 16. a variation of the same sequence of nucleotides at the same place on a long DNA molecule