In the binomial system of nomenclature, which term is always written in lowercase letters?
a. kingdom
b. domain
c. genus
d. specific epithet

Verified step by step guidance

1. Understand the binomial nomenclature system, which is a formal system of naming species of living things by giving each a name composed of two parts.
2. The first part of the name is the genus, which is always capitalized.
3. The second part of the name is the specific epithet, which is always written in lowercase.
4. Both parts together form the species name, and they are usually italicized or underlined.
5. Identify that the specific epithet is the term that is always written in lowercase letters.

Key Concepts

Binomial Nomenclature

Binomial nomenclature is a formal system of naming species, where each species is given a two-part name. The first part is the genus name, which is capitalized, and the second part is the specific epithet, which is always written in lowercase. This system was developed by Carl Linnaeus and is essential for the scientific classification of organisms.

Genus vs. Specific Epithet

In the binomial nomenclature, the genus is the first part of the name and is always capitalized, while the specific epithet is the second part and is written in lowercase. For example, in the name 'Homo sapiens', 'Homo' is the genus and 'sapiens' is the specific epithet. Understanding this distinction is crucial for correctly identifying and classifying organisms.

Taxonomic Hierarchy

Taxonomic hierarchy is the system of organizing living organisms into categories based on shared characteristics. It includes ranks such as domain, kingdom, phylum, class, order, family, genus, and species. This hierarchy helps in understanding the relationships between different organisms and is foundational for the study of microbiology and biodiversity.