C值谜
C值谜（C-value enigma）更常见且较早出现的名称是C值悖论（C-value paradox）。指一个关于真核生物各物种的基因组大小差异的难题，也就是生物的C值（或基因组大小）并不与生物复杂程度相关的现象。例如植物与原生动物，可能具有比人类更大的基因组。
文献
编辑- Gregory TR (2005). Genome size evolution in animals. In The Evolution of the Genome (ed. T.R. Gregory), pp. 3-87. Elsevier, San Diego.
- Gregory TR (2001). Coincidence, coevolution, or causation? DNA content, cell size, and the C-value enigma. Biological Reviews, 76:65-101.
- Gregory TR (2000). Nucleotypic effects without nuclei: genome size and erythrocyte size in mammals. Genome, 43:895-901.
- Thomas CA (1971). The genetic organization of chromosomes. Annual Review of Genetics 5:237-256.
- Swift H (1950). The constancy of desoxyribose nucleic acid in plant nuclei. Proc Natl Acad Sci USA, 36:643-654.