| 释义 |
trihybrid, a.|traɪˈhaɪbrɪd|
[f. tri- + hybrid n. and a.]
1. Genetics. Of or pertaining to a hybrid that is heterozygous with respect to three independent genes.
1918Genetics III. 591 The undepleted litters in our trihybrid ratio show a suggestive order or arrangement of frequencies.
2. Involving or pertaining to a descent from three different races or types that interbred.
1941Tindale & Birdsell in Records S. Austral. Museum VII. i. 6 The Australian aboriginal no longer may be considered as a pure race of unusual homogeneity, but a well-blended group of at least dihybrid and probably trihybrid origin. 1969A. A. Abbie Original Australians xi. 215 My own observation on Aborigines in many parts of Australia have not disclosed the physical differences the ‘trihybrid theory’ demands. 1979Nature 15 Nov. 298/2 In spite of an earlier model postulating a trihybrid origin, a theory favouring a homogeneous colonising stock had gained some acceptance. |