雁形目 meaning in English
anseriformes
ducks
geese
swans
Examples
- 3 . the sequence variation of mitochondria ! cytochrome b gene and phylogenetic relationships of anseriformes were studied based on the complete cytochrome b gene sequences of 19 species combined with 4 species got from genbank
3 、研究测定雁形目鸟类19f mtdna细胞色素b基因全序列，结合genbank中的4个物种，分析了雁形目鸟类细胞色素b基因的序列变异及其分子系统发生。 - 2 . the sequences variation of mitochondrial 12s rrna gene and phylogenetic relationships of anseriformes were studied based on the complete 12s rrna gene sequences of 36 living species of which 19 species were sequenced and other related data obtained from genbank
2 、研究测定了雁形目( anseriformes ) 19种mtdna12srrna基因全序列，结合genbank中雁形目种类相关数据，分析了雁形目36种鸟类12srrna基因序列变异及其分子系统发生。 - Among avian orders , the anseriformes ( screamers and waterfowls ) are a morphologically and biologically diverse group containing ca . 150 species distributed worldwide except antarctica . this paper will review the phylogeny of anseriformes firstly and then discuss the molecular phylogeny of anseriformes based on the genetic variation of mitochondrial 12s rrna gene and cytochrome b gene respectively
本文首先对雁形目鸟类的系统发生研究进行了综述，然后分别基于雁形目鸟类线粒体dna12srrna基因和细胞色素b基因全序列的遗传变异分析，探讨了雁形目鸟类分子系统发生。 - Analysis of the sequence variation of cytochrome b gene indicated that there is no evidence of insertions or deletions , i . e . , they are all of identical length of 1143 bp in all the sequences of cytochrome b gene . further , the sequences can be fully translated into amino acid using chicken mitochondrial codon without nonsense mutations or intervening stop codons . the 1143 bp cytochrome b alignment contained 416 variable sites , of which 306 were parsimony informative sites with the strongest variable in third codon positions and less variable in first and second codon positions
细胞色素b基因序列变异分析表明： 1 ）雁形目鸟类细胞色素b基因全序列长度一致，无插入和缺失：对照鸡线粒体密码子系统全序列能全部翻译成氨基酸序列，无无义突变，全序列内部无终止密码子； 2 ）序列比对后1143加，含416个核着酸变异位点， 306个简约信息位点，其中处于密码子第三位的变异最大，第一位和第二位碱基的变异相对较小。 - 1 . because the taxonomic division is rather complex and has been much disputed and revised , in this part , we will review the classification and phylogeny of families , subfamilies and tribes of anseriformes based on morphology , ethology , osteology , mitochondrial and nuclear dna restriction fragment length polymorphism , single - copy nuclear dna hybridization and the sequences of mitochondrial gene analysis referring to the different definition , classification and phylogenetic relationships of the families , subfamilies and tribes of anseriformes . the controversial questions and deficiency in the systematic studies of anseriformes were pointed out
具体包括以下几个部分： 1 、针对雁形目鸟类异常复杂的分类状况及分类上存在的争议，根据雁形目鸟类的形态学、行为学、骨骼学、角蛋白、线粒体与核dna酶切片段长度多态、单拷贝核dna - dna杂交及线粒体基因dna序列分析等方面的研究，对雁形目鸟类分类中科、亚科和族的划分及其相互间的系统发生关系进行综述，分析系统学研究中存在的不足，提出了雁形目鸟类分类中急需解决的问题。