Unit 6

3. selection-the strategy of dealing with dialectical tensions by choosing one side of a dialectical opposition while ignoring the other for a period of time
6. effect- A change in allele frequency following a dramatic reduction in the size of a population
7. flow- Movement of alleles into or out of a population due to the migration of individuals to or from the population
9. Ability of an animal to look like another more harmful animal
11. movement away from one's homeland
13. allele frequency equation
15. Ability of an organism to survive and reproduce in its environment
16. equilibrium-condition that occurs when the frequency of alleles in a particular gene pool remain constant over time
20. isolation- Form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding
21. A substance in the environment that is useful to people, is economically and technologically feasible to access, and is socially acceptable to use.
22. A trait that helps an organism survive and reproduce
23. selection-A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.

1. drift-A change in the allele frequency of a population as a result of chance events rather than natural selection.
2. frequency- Number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
4. selection-favors average version of the trait
5. effect- occurs when a small group starts a new population, resulting in limited genetic div.
8. Selection- form of natural selection in which a single curve splits into two; occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals near the middle
10. A group of individuals that belong to the same species and live in the same area
12. Migration to a new location
14. variation- Differences among individuals in the composition of their genes or other DNA segments
17. isolation-form of reproductive isolation in which two populations are separated physically by geographic barriers such as rivers, mountains, or stretches of water
18. Selection- Form of natural selection in which the entire curve moves; occurs when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
19. pool-Combined genetic information of all the members of a particular population