2n14

2n14 is a shorthand used in cytogenetics to denote a diploid chromosome number of 14 in a somatic cell. The notation reflects that two complete sets of chromosomes are present, yielding 14 individual chromosomes overall. The corresponding haploid number is n = 7. In some datasets the same information is written as 2n = 14 or as 2n14, depending on conventions.

Species described with 2n = 14 are found across multiple lineages; such counts can arise through chromosomal fusions or fissions, or from polyploid events in evolutionary history. A diploid count of 14 may influence meiotic pairing and fertility and is a useful datum in comparisons of karyotypes within a taxon or between taxa.

Determination of a 2n = 14 count is performed through cytogenetic analysis of cells in metaphase, often from plant root tips or animal embryonic tissue. Techniques include light microscopy of stained chromosome spreads and, more recently, methods such as fluorescent in situ hybridization or flow cytometry to estimate DNA content.

In research and applied contexts, knowing the diploid chromosome number aids in taxonomy, systematics, and breeding programs. It informs evolutionary studies by providing a basis for comparing karyotypes across related species and can influence experimental design in genetics and genomics.

See also: Chromosome number, Diploidy, Haploidy, Polyploidy.