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Biological Evolution

TermDefinition
Evolution the process whereby earth's life changes over time through changes in the genes of populations
Natural Selection A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. *survival of the most fit*
Genetic Diversity the variety of genes within a given species population
Speciation the formation of new and distinct species in the course of evolution.
Homologous Structures Bone structures in different species that are similar because of common ancestry. ex: forearm structures of a bat, cat, whale, human and dog.
Analogous Structures similarities among unrelated species that result from convergent evolution. They may have the same function but different bone structures. ex: Wings of a butterfly, bird and bat
Charles Darwin English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
Genes A segment of DNA on a chromosome that codes for a specific trait
Fossils The preserved remains or traces of an organism that lived in the past
Ancestor a person or organism that someone is descended from
mutation (n) a change in a gene or chromosome of an organism that can be inherited by its offspring. This can lead to an overall change in the traits expressed in a population
Created by: jasmine.smith
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