Vocabulary words for Chapter 23 of Campbell Reece Biology 8th Edition for AP Biology.
Terms : Hide Images
| 1205458309 | No Mutations Random Mating No Natural Selection Extremely Large Population Size No Gene Flow | Conditions for Hardy-Weinberg Equilibrium | |
| 1205458310 | Genetic Drift, Gene Flow, Natural Selection, Mutations, and Nonrandom mating | Major Factors that alter allele frequencies | |
| 1205458311 | Diploidy and Balancing Selection | How genetic variation is preserved | |
| 1205458312 | Genetic Drift | Changes in allele frequencies in small populations Bottleneck Effect Founder Effect | |
| 1205458313 | Gene Flow | The movement of individuals and/or alleles in and out of a population | |
| 1205458314 | Natural Selection | Occurs when some individuals contribute more offspring than do others | |
| 1205458315 | Diploidy | Recessive alleles are hidden from selection in heterozygous genotypes | |
| 1205458316 | Balancing Selection | Natural Selection maintains two or more forms in population Hetero-zygote Advantage Frequency-Dependent Selection | |
| 1205458317 | Hetero-zygote Advantage | Sometimes heterozygous individuals are more fit than homozygous individuals Sickle Cell Anemia | |
| 1205458318 | Frequency-dependent selection | Fitness of a phenotype declines if it becomes too common | |
| 1205458319 | Balanced Polymorphism | More than one favorable traits for the environment | |
| 1205458320 | Bottleneck Effect | A disaster might create a smaller population from a larger one, and the small population's gene pool might not be representative of the original gene pool | |
| 1205458321 | Stabilizing Selection | Acts against extreme phenotypes and favors intermediate phenotypes. If a population of mice lives in an environment that consists of rocks of an intermediate color, both light and dark mice will be selected against. In humans, human babies weigh between 3-4 kg at birth | |
| 1205458322 | Directional Selection | Shifts frequency curve toward rarer phenotype than the average common phenotype. Darker mice will be favored in an environment of dark rocks, because the darker fur color conceals them from predators | |
| 1205458323 | Diversifying Selection | Favors individuals on both ends of a phenotypic range over intermediate phenotypes. If a population of mice colonizes a patchy habitat made of light and dark rocks, mice of an intermediate color are at a disadvantage. | |
| 1205458324 | Founder Effect | A few individuals might become isolated from a larger population, and the smaller population may not have all the alleles found among members of its source population |
