Unit 6 Vocab

3. Type of natural selection in which individuals with one extreme phenotypes have an advantage and the other extreme is selected against
5. measurment of the ability of an individual to survive and reproduce successful offspring
7. Isolation of a population due to physical barriers such as a fence, mountain range, or body of water
8. Describes movement of genes/alleles/individuals between 2 neighboring populations- makes populations more alike
10. Migration of individuals out of a population
11. When a population expriences a rapid, drastic reduction in the number of individuals in the population- reduces variation and change allele frequencies of the population
15. Type of natural selection in which individuals at either extreme of the bell curve acheive higher fitness and the average is selected against
17. State of genetic equalibrium characterized by a large population, no migration, no natural selection, no mutations, and random mating
18. The idea that those individuals best suited to their environment will achive higher fitness
19. When organisms will impersonate other organisms to increase fitness
20. Random changes in allele frequencies attributed to luck not fitness

1. When a small part of a population is seperated from the rest and colonizes a new area- they often respond differently to natural selection pressures
2. Refers to the differences among individuals in a population
4. Isolation of a population due to differences in communication mating rituals or other behavoirs
6. Percent of indidual of a population that have a particular trait expressed as a number between 0 and 1
9. Any characteristic that increases the fitness of an individual
12. Migration of new individuals into a population
13. A nessesary or desired commodity in an ecosystem individuals of a population will compete for these
14. Collection of all the alleles present in a populations fitness
16. Group of individuals of the same species that live in the same area at the same time and can interbreed