Karyotype
A karyotype is the number of Chromosomes found in the Nucleus of a Cell. Each organism has its own karyotype. A karyoptype is often displayed by arranging the chromosomes based on their appearance, by their length and position of their Centromeres.
References
Hartl D.L, Ruvolo M (2012) Genetics: Analysis of Genes and Genomes, 8th edition, Jones and Barlett Learning, Boston