click below
click below
Normal Size Small Size show me how
Biology Honors-per.2
Vocabulary- Unit 2 Evolution
Question | Answer |
---|---|
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 |