A Level Biology - Classification and Evolution

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Last updated: February 7, 2018

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Defintion	Keyword
The process of placing living things into groups	Classification
A system that uses the genus name and the species name to avoid confusion when naming organisms	Bionomial system
Group of organisms that all posses the same general traits	Class
Plantae, Animalia, Fungi, Protoctista and Prokaryotae	Kingdom
Term used to explain how features of the environment apply a selective force on the reproduction of individuals in a population	Natural selection
Group of closely related genera	Family
A group of closely related species	Genus
Subdivision of the class using additional information	Order
Subdivision of the kingdom	Phylum
Highest taxonomic rank	Domain
The study of the evolutionary relationships between organisms	Phylogeny
Variation caused by response to environmental factors such as light intensity	Environmental
The differences between species	Interspecific

Defintion	Keyword
Where there are distinct categories and nothing in between	Discontinuous
A test used to compare two means	Student's t-test
Basic unit of classification	Species
The presence of variety - the differences between individuals	Variation
A characteristic that enhances survival in the habitat	Adaptation
Structural features	Anatomical adaptations
Variation where there are two extremes and a full range of values in between	Continuous
Variation caused by possessing a different combination of alleles	Genetic
A measure of how closely two sets of data are correlated. A value of 1 means perfect correlation	Correlation coefficient
The variation between members of the same species	Intraspecific
A measure of the spread around a mean	Standard deviation
The ways that behavior is modified for survival	Behavioral adaptations