Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)
- (1) The condition under which two characters do not represent independent evidence in support of a group. (2) The union of more than two character states into a single multistate character. Also known as character interdependency.
Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- Association between genes on the same chromosome such that they do not show random assortment and seldom recombine; the closer the genes, the lower the frequency of recombination.
- Kitching, I. J., Forey, P. L. Humphries, C. J. & Williams, D. M. 1998. Cladistics, 2nd ed.: the Theory and Practice of Parsimony Analysis. -xii + 228 pp. Oxford University Press, New York.
- Sadava, D., Hillis, D. M., Heller, H. C. & Berenbaum, M. R. 2011. Life: The Science of Biology, 9th ed. -xliv + 1266 pp. Sinauer Associates, Inc., Sunderland.