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The early taxonomists

The diversity of living organisms

Interbreeding between species

The similarity between individuals of a single species

Individuals of a single species

The binomial system

The Linnaean symbol

The taxonomy of the species Homo

Higher taxonomic ranks

The names of taxonomic ranks

Additional taxonomic ranks

Classification of the sweet pea

Natural classification

Monera (Prokaryotae)

Protista

Fungi

Plantae

Animalia

One living world – five kingdoms

 Whittaker's five-kingdom system

Three approaches to taxonomy

Genom scans of butterflies

Classification puzzle