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Evolution Terms

Vocabulary Associated with Evolution Unit

TermDefinition
Evolution Change of populations over time, especially from simple to more complex
Related to Being connected to a family, group, or individual
Descended from To come down from another generation, to be a direct blood relative
Fossil The preserved remains or impression of a prehistoric organism
Natural Selection The process where organisms better adapted to their environment survive and reproduce passing on those adaptations to the next generation
Artificial Selection The process where humans choose what traits get passed down to the next generation
Cladogram A branching diagram showing the relationship of a number of different species
Speciation The formation of a new species through the course of evolution
Gene Pool The total of alleles or genes in a population
Homologous Structures When different organisms have bones or organs that have very similar form and function
Analogous Structures Different animals have structures with the same function but no underlying common form
Vestigial Structure A structure present in an organism that no longer has a purpose or function
Competition Fighting over resources such as food, shelter, or mates.
Embryo unborn developing organism
geographic isloation When a population is separated by some form of geography from the rest of their species.
genetic drift a variation of the allele frequency in a small population
Adaptive Radiation The diversification of a group of organisms into different forms filling different ecological niches
Created by: k2hutson
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