Evolution Flashcards
Redi
Did the meat experiment
Spallanzani
Designed an experiment to test spontaneous generation in microorganisms
Isotopes
Atoms of the same element that differ in the number of neutrons they contain
Law of superposition
Successive layers of rock or soil were deposited on top of one another by wind and water
Stratum
Layer of earth
Biogeography
The study of the geographical distribution of fossils and of living organisms
Acquired trait
Not genetic but gained from experience
Homologous
Similar features that originated in a shared ancestor
Analogous
Serve identical functions and look alike but have very different embryological development and different internal anatomy
Vestigial
Not useful to the modern organism
Convergent evolution
The environment selects similar phenotype seven thought he ancestral types were much different
Divergent evolution
Two or more related populations become more dissimilar
Adaptive radiation
Type of divergent evolution where many related species evolve from a single ancestral species
Artificial selection
Bred artificially by like people or something
Population genetics
The study of evolution from a genetic point of view
Gene flow
The process of genes moving from one population to another
Genetic drift
Allele frequencies in a population change as a result of random events or chance
Assortative mating
The selection of a mate based on similarity of characteristics
Stabilizing selection
Individuals with the average form of a trait have the highest fitness
Directional selection
Individuals that show a more extreme form of a trait have greater fitness than those with an average form of a trait
Morphology
Internal and external structure and appearance of an organism
Geographic isolation
The physical separation of members of a population
Reproductive isolation
Results from barriers to successful breeding between population groups in the same area
Prezygotic isolation
Type of reproductive isolation which occurs before fertilization
