例句與用法

1. ( 4 ) the molecular phylogenetic trees suggest that bagrid catfishes form a monophyletic group , and the genus mystus is the earliest divergent in east asian bagrid catfishes , as well as the genus pseudobagrus is a monophyletic group but the genus pelteobagrus and leiocassis are complicated
   ?科構(gòu)成一單系類群，其中蠖屬為較為特化的屬，擬?屬為一明顯的類群，而黃顙魚屬和?屬關(guān)系較為混亂。
2. The results show that ( 1 ) loops are in general more variable than stems , and in loops a strong adenine bias are observed : ( 2 ) there does not exist a saturation effect in stems , loops or all positions of the 16s rrna gene fragments : ( 3 ) in the molecular cladogram , bagarius forms a sister group with glyptothorax , and euchiloganis forms a sister group with pareuchiloglanis , and exostoma forms a sister group with glyptosternum : ( 4 ) the phlogenetic positions of pseudecheneis , exostoma and glyptosternum are not recognized ; the glyptosternoid fishes are not monophyly although they are defined by 13 osteological apomorphies ; the incongruence of cladograms between molecular and morphological sets may be caused by less informative sites of the 550 homologous sites ; ( 5 ) e . davidi and e . kishinouyei could be the same species according to the genetic distances ; p . sinensis and p . anteanalis could be too
   結(jié)果表明： ( 1 )環(huán)區(qū)平均變異位點(diǎn)較莖區(qū)多，有很強(qiáng)的a偏好性； ( 2 )沒有替代飽和現(xiàn)象； ( 3 )分子系統(tǒng)樹上?屬和紋胸?屬構(gòu)成姐妹群，石爬?屬和?屬構(gòu)成姐妹群， ?屬和原?屬構(gòu)成姐妹群； ( 4 ) ?屬、原?屬和褶?屬的系統(tǒng)發(fā)育位置不定， ? ?魚類并未形成一個(gè)單系類群；可能的原因是所得到的16srrna基因片段信息位點(diǎn)太少； ( 5 )青石爬?和黃石爬?可能是同一物種，中華?和前臀?可能是同一物種。