Biology Vocab 6

2. isolation of a population due to differences in the timing of mating
4. collection of all the alleles present in a population
8. type of natural selection in which individuals with the average phenotype have an advantage and the extremes are selected against
14. type of natural selection in which individuals at either extreme of the bell curve achieve higher fitness and the average is selected against
15. isolation of a population due to physical barriers such as a fence, mountain range, or body of water
16. a characteristic that increases the fitness of an individual
17. refers to the differences among individuals in a population
18. describes the movement of genes/alleles/individuals between 2 neighboring populations- makes populations mare alike
19. when organisms will impersonate other organisms to increase fitness
20. state of genetic equilibrium characterized by a large population, no migration, no natural selection, no mutations, and random mating

1. measurement of the ability of an individual to survive and reproduce successful offspring
3. group of individuals of the same species that live in the same area at the same time and can interbreed
5. type of natural selection in which individuals with one extreme phenotype have an advantage and the other extreme is selected against
6. migration of new individuals into a population
7. isolation of a population due to differences in communication, mating rituals, or other behaviors
9. random changes in allele frequencies attributed to lick, not fitness
10. when a small part of a population is separated from the rest and colonizes a new area- they often respond differently to natural selection pressures
11. the idea that those individuals best suited to their environment will achieve higher fitness
12. selection within a population due to human interference and selection of desired traits
13. percent of individuals of a population that have a particular trait- expressed as a number between 1 and 0