Unit B

Module 3 ~ Lesson 4


Binomial Nomenclature

The binomial nomenclature system gives every species a specific,two-part scientific name.

When forming an organism's scientific name, remember that the genus is the first word (capitalize the first letter), and the species name is the second word (lowercase first letter) of the two-part name (e.g., Homo sapiens).In the following table, you will notice that humans and the American robin are in the same domain, kingdom, and phylum but are in different classes. The scientific name for each is listed. You will notice that it is made up of two names and written in italics: Genus species. The common name is neither capitalized nor written in italics: mountain lion, caribou, American robin.

Two organisms are more closely related if they have more similarities in their classification. Humans and robins are of the same Domain, Kingdom, and Phylum.


Image by Olga Ozik from Pixabay


Image by David Mark from Pixabay


Human and Robin Classification

Human

American robin

Domain

Eukarya

Eukarya

Kingdom

Animalia

Animalia

Phylum

Chordata

Chordata

Class

Mammalia

Aves

Order

Primates

Passeriformes

Family

Hominidae

Turdidae

Genus

Homo

Turdus

Species

sapiens

migratorius

Scientific Name

Homo sapiens

Turdus migratorius


 Read

Read "Naming Systems" on page 88 of your textbook.