Prelab 3 Vocab
Terms
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- Hardy-Weinberg Equilibrium
- The theoretical distribution of alleles in a given population in the absence of evolution, expressed as a mathematical equation.
- Macroevolution
- Evolution of major phenotypic changes over relatively short time periods.
- Biological Species Concept
- Defines species as interbreeding populations reproductively isolated from other such populations.
- Ecological Species Concept
- Defines species based on the uniqueness of their ecological niche.
- Allopatric Speciation
- Speciation occurring via geographic isolation.
- Parapatric Speciation
- Speciation occurring when two populations have continuous distributions and some phenotypes in that distribution are more favorable than others.
- Sympatric Speciation
- Speciation occurring in the same geographic location.
- Anagenesis
- Evolution of a trait or species into another over a period of time.
- Cladogenesis
- Evolution through the branching of a species or lineage
- Convergent Evolution
- Similar form or function brought by natural selection under similar environments rather than shared ancestry.
- negative assortative mating
- Occurs when a reproducing organism chooses a dissimilar mate which generally results in greater genetic variation.
- Phylogeny
- The evolutionary development and history of a species or higher taxonomic grouping of organisms.
- Taxonomy
- The science of biological classification.
- Homologous
- Similarity of traits resulting from a shared ancestry.
- Analogous
- Having similar traits due to similar use, not due to shared ancestry.
- Kin Selection
- Principle that animals behave preferentially towards their genetic kin; formulated by William Hamilton.
- Indirect Fitness
- When animals abilities contribute to the survival of indirect descendants.