释义 |
Definition of triclad in English: tricladnoun ˈtrʌɪkladˈtrīklad Zoology A free-living flatworm of an order characterized by having a gut with three branches, including the planarians. Order Tricladida, class Turbellaria Example sentencesExamples - We have searched for Hox and ParaHox genes in several flatworm groups spanning from freshwater triclads to marine polyclads and, more recently, in the acoels, the likely earliest extant bilaterian.
- Despite several attempts, no ParaHox genes have so far been found in triclads.
- We have isolated and sequenced eight Hox genes from the freshwater triclad Girardia tigrina and three Hox and two ParaHox genes from the polyclad Discocelis tigrina.
- The amplified fragment of EF1a varies in size, from 947 nt in the two polyclads to 962 nt in C. roscoffensis to 965 nt in the three triclads.
- The KKEE motif shared between Convoluta and the triclads either is due to convergence or is an artefact of imposed positional homology in the alignment of Berney, Pawloski, and Zaninetti.
- In fact, there are only two authenticated cases of passive dispersal in freshwater triclads.
Origin Late 19th century: from modern Latin Tricladida, from tri- 'three' + Greek klados 'branch'. Definition of triclad in US English: tricladnounˈtrīklad Zoology A free-living flatworm of an order characterized by having a gut with three branches, including the planarians. Order Tricladida, class Turbellaria Example sentencesExamples - In fact, there are only two authenticated cases of passive dispersal in freshwater triclads.
- The KKEE motif shared between Convoluta and the triclads either is due to convergence or is an artefact of imposed positional homology in the alignment of Berney, Pawloski, and Zaninetti.
- The amplified fragment of EF1a varies in size, from 947 nt in the two polyclads to 962 nt in C. roscoffensis to 965 nt in the three triclads.
- We have searched for Hox and ParaHox genes in several flatworm groups spanning from freshwater triclads to marine polyclads and, more recently, in the acoels, the likely earliest extant bilaterian.
- Despite several attempts, no ParaHox genes have so far been found in triclads.
- We have isolated and sequenced eight Hox genes from the freshwater triclad Girardia tigrina and three Hox and two ParaHox genes from the polyclad Discocelis tigrina.
Origin Late 19th century: from modern Latin Tricladida, from tri- ‘three’ + Greek klados ‘branch’. |