| 释义 |
phenon|ˈfɛnɒn|
[f. Gr. ϕαίνειν to appear + -on.]
a. Biol. A group of apparently similar plants or animals.
1943Camp & Gilly in Brittonia IV. 335 Phenon: a species which is phenotypically homogeneous and whose individuals are sexually reproductive, but which is composed of intersterile segments. 1969E. Mayr Princ. Systematic Zool. i. 5 There is no generally accepted technical term for a phenotypically reasonably uniform sample, but it may be designated as a phenon. Ibid. 10 A phenon is not necessarily a population in the biological sense.
b. Taxonomy. A grouping of plants or animals established by techniques of numerical analysis.
1962Sneath & Sokal in Nature 3 Mar. 860/1 How should we name the groups which are established by numerical taxonomy?.. We call the groups simply ‘phenons’. 1963Davis & Heywood Princ. Angiosperm Taxon. iv. 136 Sneath & Sokal have introduced the concept of a phenon for the definition of groups obtained by cluster analysis... In practice a phenon defines groups by drawing lines horizontally across the dendrograms. 1963Sokal & Sneath Princ. Numerical Taxon. ix. 251 The phenon nomenclature... Phenons are groups which approach natural taxa more or less closely, and..they can be of any hierarchic rank or of indeterminate rank. 1966New Scientist 20 Jan. 151/3 These groups are called phenons... If the original taxa are species each of the three new phenon taxa might represent a sub-genus or genus. 1973Sneath & Sokal Numerical Taxon. v. 294 The term phenon is intended to be general, to cover the groups produced by any form of cluster analysis. |