| A | B |
|---|
| Population | Consists of all f the individuals of a specie that live together in one place at one time. |
| Demography | The statistical study of populations. |
| Population size | The number of indiviguals in a population. |
| Populatin density | The number of individuals found in a given area. |
| Dispersion | The way in which the individuals of a population are arranged. |
| Model | A hypothetical population that has key characteristics of the real poulation being studied. |
| Exponental growth curve | A population size plotted against time. |
| Carrying capaciity | The population size that an environment cn sustain. |
| Logistic model | A model that accounts for the declning resources available to population as they grow. |
| R-strategists | Species characterized by exponential growth. |
| K-strategists | Species characterized by a high degree of specialization. |
| Hardy-Weinberg priciple | Principle that stattes that populations do not change unless evlutionary forces at upon them. |
| Allele fepuencies | The 'p' and 'q' symbols in the Hardy-Weinberg epuation. |
| Gene flow | The movement of alleles into or out of a population. |
| Nonrandom mating | Individuals that prfer to mate with others of their own genotype. |
| Genetic drift | Change in alele frequencythat appears to occur randomly. |
| Genentic polymorphism | A genetic variation ina population that results from a more than one allele for a gene. |
| Polygenic trait | A characteristic influence by several genes. |
| Normal distribution | A graphed hill-shaped curve. |
| Directional selecion | The average value is shifted twordes the other extream. |
| Stabilizing selection | Whene the distribution becomes narrower, tending to stabilize the average. |
| Disruptive selection | The distribution becomes separated or disrupte. |
