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Patterns in Life: Diversity and Classification

Two names for every kind

A peacock is mor in Hindi and mayil in Tamil. Its scientific name is Pavo cristatus everywhere.

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The rule

A scientific name has two parts: genus, then species. It names one kind everywhere, in every language. Give the genus a capital and the species a small letter. Use italics in print.

This system is called binomial nomenclature, which means naming by two parts. The genus groups close relatives. A species is a group of similar living things. Members of one species breed with each other. Their young can breed too.

Genus first, capital letter: Mangifera.
Step 1 of 4
  1. Genus first, capital letter: Mangifera.
  2. Species second, small letter: indica.
  3. Both words in italics, or underlined by hand.
  4. Together: Mangifera indica — one kind, everywhere.

Writing a scientific name

Five real scientific names
Common nameScientific name
MangoMangifera indica
NeemAzadirachta indica
TigerPanthera tigris
LionPanthera leo
PeacockPavo cristatus

The tiger and the lion share the genus Panthera. Their species names differ. So they are two species in one genus.

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This track

  1. 0 Start here
  2. 1 Too many to list
  3. 2 A feature that splits cleanly
  4. 3 What decides a group
  5. 4 Groups inside groups
  6. 5 Five large groups
  7. 6 Two names for every kind
  8. 7 The things that do not fit
  9. 8 The big picture
  10. 9 Track quiz

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