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| 8585810741 | Microevolution | Evolutionary change below the species level |  | 0 |
| 8585810742 | Genetic Variation | Differences among individuals in the composition of their genes or other segments |  | 1 |
| 8585810743 | Gene Pool | Consists of all copies of every type of allele at every locus in all members of a population |  | 2 |
| 8585810744 | Hardy-Weinberg Equilibrium | The state of a population in which frequencies of alleles and genotype remain constant from generation to generation |  | 3 |
| 8585810745 | Adaptive Evolution | Evolution that results in a better match between organisms and their envir |  | 4 |
| 8585810746 | Genetic Drift | A process in which change events cause unpredictable fluctuations in allele frequencies from one generation to the next |  | 5 |
| 8585810747 | Founder Effect | Genetic drift that occurs when a few individuals become isolated from a larger population and form a new population whose gene pool composition is not reflective of that of the original populatio |  | 6 |
| 8585810748 | Bottleneck Effect | Genetic drift that occurs when the size of a population is reduced |  | 7 |
| 8585810749 | Relative Fitness | The contribution an individual makes to the gene pool of the next generation relative to the contributions of others | 8 | |
| 8585810750 | Directional Selection | Occurs when conditions favor individuals exhibiting one extreme of a phenotypic range, thereby shifting a populations frequency curve for the phenotypic character in one direction to the other |  | 9 |
| 8585810751 | Stabilizing Selection | Acts against both extreme phenotypes and favors intermediate variants |  | 10 |
| 8585810752 | Disruptive Selection | Occurs when conditions favor individuals at both extremes of a phenotypic range over individuals with intermediate phenotypes |  | 11 |
| 8585810753 | Sexual Selection | Natural selection for mating success |  | 12 |
| 8585810754 | Sexual Dimorphism | A difference in secondary sexual characteristics between male and females of the same species |  | 13 |
| 8585810757 | Heterozygote Advantage | When individuals are heterozygous at a particular locus have greater fitness than do both kinds of homozygotes |  | 14 |
| 8585810758 | Frequency-dependent selection | The fitness of a phenotype depends on how common it is in the population |  | 15 |
| 8585810759 | Population genetics | The study of how populations change genetically over time | | 16 |
| 8585810761 | Population | A localized group of that are capable of interbreeding and producing fertile offspring |  | 17 |
| 8585810762 | Mutations | Changes in the nucleotide sequence of DNA |  | 18 |
| 8585810763 | Duplication | An abbreviation in a chromosome structure due to fusion with a fragment from a homologous chromosome, such that a portion of a chromosome is duplicated |  | 19 |
| 8585810764 | Gene flow | Genetic additions to and/ or subtraction a from a population resulting from the movement of fertile individuals or gametes |  | 20 |
| 8585810765 | Geographic variation | Differences between the gene pools of desperate populations or population subgroups |  | 21 |
| 8585810766 | Cline | A graded change in a trait alon a geopgraphic axis |  | 22 |
