Two Parts To The Binomial System
Definition
Binomial name
A binomial name is a two-part Latinized name that uniquely identifies a species. The first word represents the genus, and the second word represents the specific species within that genus.
- The binomial system gives every species a unique two-part name, ensuring consistent identification.
- It consists of:
- Genus name: The first part, which groups closely related species.
- Species name: The second part, which specifies the exact species.
Homo sapiens:
- Homo: The genus grouping humans with extinct relatives like Homo neanderthalensis.
- sapiens: The species name identifying modern humans.
Formatting Rules
- Italicize when printed, or underline when handwritten.
- After first mention, the genus can be abbreviated (e.g., E. coli).
- Names are Latin or latinized, ensuring international understanding.
- Genus = capitalized; species = lowercase.
- Both italicized.
Functional Value
- Consistency: The same species has the same name worldwide.
- Clarity: Prevents confusion caused by common names.
- Evolutionary meaning: Species within a genus share structural and genetic traits.
- What does the first part of a binomial name represent?
- How should scientific names be formatted in print?
- Why is Latin used in binomial nomenclature?
- Give one reason the system prevents confusion.
