The precise number of chromosomes typical for a given species. In any given asexually reproducing species, the chromosome number is always the same.

http://id.loc.gov/authorities/subjects/sh85025387

http://id.loc.gov/authorities/subjects/sh87005147

Britannica Editors. "chromosome number". Encyclopedia Britannica, 18 Jul. 2026, https://www.britannica.com/science/chromosome-number. Accessed 15 August 2026.