| 释义 |
pleiotropic, a. Genetics.|plaɪəʊˈtrɒpɪk, -ˈtrəʊpɪk|
[f. as next: see -ic.]
Pertaining to, displaying, or being pleiotropy. Hence pleioˈtropically adv.
1938Proc. R. Soc. B. CXXV. 138 The analysis of the pathological symptoms given above allows us to bring some order into the multitude of ‘pleiotropic’ effects produced by our lethal factor. 1956C. Auerbach Genetics in Atomic Age 104 The gene for waltzing in the mouse acts pleiotropically on behaviour and hearing. Most or all genes have pleiotropic effects, often on such general characteristics as size, fertility, and longevity. 1964New Scientist 17 Dec. 779/3 The streptomycin resistance is ‘pleiotropic’—it brings about simultaneously one or more metabolically unrelated nutritional requirements. 1973B. J. Williams Evolution & Human Origins ii. 30/1 A gene is said to have pleiotropic effects if it affects more than one phenotypic trait. 1974Jrnl. Gen. Microbiol. LXXXI. 165 Mutants in a gene..in Aspergillus nidulans pleiotropically affect the utilization of many nitrogen sources. |