Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Chromosome number refers to the total count of chromosomes present in an organism's cell nucleus. It is a characteristic feature of species and can vary widely.
Related terms
Karyotype: The number and visual appearance of the chromosomes in the cell nuclei of an organism or species.
Autosome: Any chromosome that is not a sex chromosome.
Sex Chromosome: A type of chromosome responsible for determining the sex of an organism, typically one of two kinds.