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What are species?
How do species form?
How are species related?
The extended family
How many species are there?
Species distribution
Extinction
 
Species at risk
Priority species
Useful species for reforestation
Weeds species
Virtual herbarium
 
Invasive species
 
Birds
Species catalogues
Scientific collections
Information System
Biotica
Global network of Biodiversity Information
 
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Websites
 
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Home - Species - Concepts - The extended family

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All living organisms are related, from the smallest bacteria to the largest whales. To reflect the relationship between groups of species, biological classifications have been developed. Currently, Taxonomy is the discipline that deals with biological classifications, using sequences of deoxyribonucleic acid (DNA) from each organism as the most reliable source of information regarding relationship.

Species meet in genera, genera in families, families in orders, orders in classes, classes in divisions for plants and in phyla for animals. Divisions are grouped into kingdoms and kingdoms into domains.
 
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Species
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