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Module 3: Biodiversity and Evolution
2.3.2 Classification
(a) define the terms
Classification The process of sorting living things into groups according to how closely related they are.
Phylogeny The study of the principles of classification. It reflects the evolutionary relationships of the
species, which can be seen on an evolutionary…

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Module 3: Biodiversity and Evolution

(e) outline the binomial system of nomenclature and the use of scientific (Latin) names for species
The binomial system uses two names to identify each species: the genus name and the species name. Latin was a
universal language, which means that species are given a…

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Module 3: Biodiversity and Evolution

(g) discuss the fact that classification systems were based originally on observable features but more recent
approaches draw on a wider range of evidence to clarify relationships between organisms, including
molecular evidence
Early Classification Systems More Recent Classification Systems

The early classification system of Linnaeus…

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Module 3: Biodiversity and Evolution
In 1990, Carl Woese suggested a new classification system of domains, basing his ideas on detailed study of RNA.
In the three domain system, organisms with cells that contain a nucleus are placed in the domain Eurkarya.
Organisms that were in the kingdom Prokaryotae (unicellular…


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