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Biology Honors-per.2

Vocabulary- Unit 2 Evolution

Evolution hereditary changes in groups of living organisims over time
Natural Selection theory of evolution developed by Darwin, based on four ideas. variations, inheritance excess reproduction and the advantages of specific traits of the environment
Fitness measure of a traits relative contribution to the following generation
Camouflage morphological adaptations that allow organisms to blend into their surroundings
Analogous Structure structure that has the same function but different construction and was not inherited from a common ancestor
Biogeography study of distribution of plants and animals on earth
Vestigial Structure reduced from a functional structure that indicates a shared history
Homologous Structure anatomically similar structure inherited from a common ancestor
Mimicry morphological adaptation in which one species evolves to resemble another species for prtection or other advantages
Hardy Weinbery Principle states that alleic frequencies in populations stay the same unless they are affected by a factor that causes change
Founder Effect random effect that can occur when a small population settles in an area separated from the rest of the population and interbreeds, producing unique allelic variations
Genetic Drift random change in allelic frequencies in a population
Grandualism theory that evolution in small gradual steps over time
Bottleneck process in which a large population declines in number, then rebounds
Endosymbiont Theory explains that eukaryotic cells may have evolved from prokaryotic cells
Created by: Venanciop