Which statement about genus name abbreviations is correct?

• A. The genus name can be abbreviated to save space or if the genus name has already been stated.
• B. The genus name cannot be abbreviated in any circumstance.
• C. Abbreviation is permitted only in informal writing.
• D. Abbreviation is never used in scientific names.

Answer: (A)

Abbreviating genus names after the first full mention is a standard way to keep scientific writing concise while maintaining clarity. When you first introduce a species like Escherichia coli, you spell the genus in full; thereafter you can refer to it as E. coli. The genus part is abbreviated to its initial and a period, followed by the full species epithet, and you don’t repeat the genus each time. This is exactly why the statement that you can shorten the genus to save space or if it has already been stated is correct.

This practice isn’t limited to informal writing, and abbreviations are indeed used in formal scientific writing after the genus has been established. It’s also not a rule that the genus must always be spelled out in every context, though you should avoid abbreviation if it would cause confusion with another genus sharing the same initial.