Chromosome number,precise number of chromosomes typical for a given species. In any given asexually reproducing species, the chromosome number is always the same. In sexually reproducing organisms, the number of chromosomes in the body(somatic) cells typically is diploid ( ; a pair of each chromosome), twice the haploid ( ) number found in the sex cells, or gametes. The haploid number is produced during meiosis.
An organism with any multiple of the diploid number of chromosomes is said to be polyploid. Polyploidy is a normal evolutionary strategy among many plant groups but appears to be quite rare in animals. Examples of polyploid plants and animals are the potato (Solanum tuberosum), the African clawed frog (Xenopus laevis), and the plains viscacha rat (Tympanoctomys barrerae; also called red vizcacha rat).
Chromosome number in a flowering plant can be Haploid, diploid and polyploidy.