| Term | Definition |
|---|
| Evolution | Changes in gene (allele) frequencies in a population over time |
| Population | A group of interbreeding individuals of the same species sharing a common geographical area. |
| Species | A group of populations that have the potential to interbreed in nature and produce viable offspring |
| gene pool | sun total of all alleles within a population |
| Mutation | changes in nucleotide sequences of DNA. Mutations provide new alleles, and therefore are the ultimate source of variation |
| Recombination | Reshuffling of the genetic material during meiosis (Prophase I and Metaphase I). Assures sperm or egg different from parent |
| Natural Selection | Differential reproduction |
| Reproductive Isolation | -------- |
| Natural Variation | Provided by Mutation and recombination, the raw material for evolution |
| Hardy-Weinberg Law | The frequencies of alleles in a population will remain constant unless acted upon by outside agents or forces. Describes the genetics of Non-Evolving Populations. |
| Mutation(Hardy-Weinberg) | Mutations change allele frequencies causing evolution. |
| Migration(Hardy-Weinberg) | if new alleles are brought in by immigrants or old alleles are taken out by emigrants then the frequencies of alleles will change causing evolution. |
| Genetic Drift(Hardy-Weinberg) | The accumulation of random events that change the makeup of a gene pool slightly, but often compound over time. Random events little effect on big population but dramatic in small populations. |
| Population Bottleneck | Severe reduction in population size which reduces the diversity of a population. |
| Founder Effect | occurs when a few individual unrepresentative of the gene pool start a new population |
| Nonrandom Mating(Hardy-Weinberg) | each individual in a population must have an equal chance of mating. |
| Sexual Selection | Nonrandom mating in which mates are selected on the basis of physical or behavioral characteristics. |
Combine with other sets
Share on Facebook
Share on MySpace
!