CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search This article is about the term C-value in cell biology. For the tool used by architects and engineers to calculate lines-of-sight by spectators in theaters and stadiums, see sightline . C-value is the amount, in picograms , of DNA contained within a haploid nucleus (e.g. a gamete ) or one half the amount in a diploid somatic cell of a eukaryotic organism. In some cases (notably among diploid organisms), the terms C-value and genome size are used interchangeably; however, in polyploids the C-value may represent two or more genomes contained within the same nucleus. Greilhuber et al. [ 1 ] have suggested some new layers of terminology and associated abbreviations to clarify this issue, but these somewhat complex additions have yet to be used by other authors. 1 Origin of the term 2 ...