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evolution Vocab
all the words for evolution
16
Biology
9th Grade
03/07/2012

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Term
Evolution
Definition
occurring over a short period of time that results in the formation of new subspecies.
Term
natural selection
Definition
Excess reproduction,variations,inheritance, and the advantages of specific traits.
Term
artifical selection
Definition
The process of by which the genotypes of successive plant and animal generations are determined through controlled breeding.
Term
adaptation
Definition
The action or process of adapting or being adapted.
Term
differential reproduction
Definition
The ability to produce more offspring with the same adaptations as the parent, allowing the species to survive under changed enviormental conditions.
Term
Fitness
Definition
Measure of a traits relaitve contribution to the follwoing generation.
Term
mutation
Definition
a heritable change occurring in a gene
Term
migration
Definition
passing from one part to another, said of certain morbid processes or symptoms. 
Term
genetic drift
Definition
The process of change in the genetic composition of a population due to chance or random events rather than by natural selection, resulting in changes in alleles frequencies over time.
Term
structural adaptation
Definition
physical features that give an organism a better chance to survive in their particular niche or ecosystem.
Term
physiological adaptation
Definition
an organismic or systemic response of an individual to a specific external stimulus in order to maintain homeostatsis.
Term
mimicry
Definition
The close external resemblance of an animal or plant or part of one to another.
Term
camouflage
Definition
Hide or disguise the presence of a person, animal, or object by means of camouflage.
Term
analogous structures
Definition
Structures of different species having similar or corresponding function but not from the same evolutionary origin
Term
vestigal structures
Definition
Vestigial structures provide a clue to the evolutionary history of a species because they are remnants of structures found in the ancestral species.
Term
Homologous structures
Definition
Homologous structures or organs are those that share a common ancestry or origin.
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