| More docs on the ARB website. See also index of helppages. Last update on 27. Jun 2017 .

Main topics:

- ARB: a Short Introduction
- Glossary
- What are Genes ?

Related topics:

- What is an Alignment ?
- What are Marked Species?
- Selected Species and Cursor Position

# What are Species ?

- DESCRIPTION

## DESCRIPTION

### One species is one database entry containing many database entries describing the species and one or more sequences (every sequence belongs to a different alignment).

### A species is not necessarily consistent with a taxonomic species.

    [Database field name]           [Comment]

    name                            Unique identifier of the species
                                    (max 8 characters long)

    acc                             Accession number

    full_name                       (User defined) name of the species

### strain

### author

### journal

    ali_16s/data                    a 16s sequence (part of the 16s alignment)
    ali_23s/data                    a 23s sequence
    ali_.../data                    a ... sequence

### The description of the alignment, e.g. type or length, is not stored in every species but in an alignment description.