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Taxonomy

Taxonomy

Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics. It uses a hierarchy of increasingly inclusive categories with Latin names. The smallest units of taxonomy, species and genus, are used to assign a formal, taxonomic name to each species in a system. This classification system, referred to as binomial nomenclature, was formalized by Carolus Linnaeus in the 18th century.
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...

Phylogeny

Phylogeny

Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.

Phylogenetic Trees

Phylogenetic Trees

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The Tree of Life - Bacteria, Archaea, Eukaryotes

The Tree of Life - Bacteria, Archaea, Eukaryotes

The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...

Modern Molecular Taxonomy

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

Migration

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.

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Related Experiment Video

Updated: Sep 9, 2025

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

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From one to four: giraffe taxonomy redefined.

The Veterinary Record

|September 5, 2025

Summary

This summary is machine-generated.

Giraffes are now recognized as four distinct species, a significant change from the previous single-species classification. This reclassification impacts conservation efforts for these unique African mammals.

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Last Updated: Sep 9, 2025

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Area of Science:

Zoology
Conservation Biology
Genetics

Background:

Giraffes were historically classified as a single species, Giraffa camelopardalis.
Recent research challenges this long-held taxonomic view.
Understanding giraffe species diversity is crucial for effective conservation.

Purpose of the Study:

To review and present the findings of a report on giraffe taxonomy.
To highlight the official recognition of four distinct giraffe species.
To emphasize the implications of this taxonomic shift for conservation strategies.

Main Methods:

Analysis of a report by the International Union for Conservation of Nature (IUCN).
Review of genetic and morphological data supporting species differentiation.
Assessment of conservation status based on new species delineation.

Main Results:

Official recognition of four distinct giraffe species.
Previous classification of giraffes as one species is now outdated.
Each of the four species exhibits unique genetic and geographic characteristics.

Conclusions:

The reclassification necessitates a revised approach to giraffe conservation.
Targeted conservation plans are needed for each of the four identified species.
Further research into the ecology and behavior of each species is recommended.