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Dichotomous Keys

7.11A

TermDefinition
Adaptation a change in structure or habits (behavior), often hereditary, by which an organism improves its condition in relationship to its environment
Dichotomous key a tool used to identify species of organisms using opposing observable characteristics
Natural selection process by which gene frequencies in a population change through certain individuals producing more offspring than others because they are better able to survive and reproduce organisms better suited to their environment
Population all of the members of a species living in a particular area at a particular time
Physiology the way in which a living organism or bodily part functions
Selective breeding making deliberate crosses of plants or mating of animals, so the offspring will have a desired characteristic derived from one of the parents
Species a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Variation a different form or version of something
 

 



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