Classification (4.2.2) Definitions:

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Species
A group of organisms that produces fertile offspring
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Classification
The act of placing organisms into groups based on shared characteristics
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Taxonomy
The study of characteristics, to determine which ones would be useful in a key
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Variation
Differences within and between species
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Intraspecific variation
Variation within the same species
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Interspecific variation
Variation within different species
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Phylogeny
Evolutionary relationships between organisms, determining how closely related they are (in terms of common ancestry)
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Paleontology
The study of fossils and the fossil record
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Comparative anatomy
Studying similarities and differences in the anatomy of organisms
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Comparative biochemistry
Studying the similarities and differences in the chemical makeup of organisms
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Genotype
The alleles that an organism possesses
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Phenotype
The characteristics of an organism
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Gene pool
Total number of alleles present in a particular population at a particular time
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Allele
An alternative form of a gene
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Pre-adaptation
When an organism's existing trait is advantageous to a new situation
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Selection pressures
Factors that affect the organism's chances of survival
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Card 2

Front

The act of placing organisms into groups based on shared characteristics

Back

Classification

Card 3

Front

The study of characteristics, to determine which ones would be useful in a key

Back

Preview of the back of card 3

Card 4

Front

Differences within and between species

Back

Preview of the back of card 4

Card 5

Front

Variation within the same species

Back

Preview of the back of card 5
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