trees in south africa 中文意思是什麼
trees in south africa
解釋
南非樹木-
The sahel is the area of africa that lies between the sahara desert to the north and more fertile land to the south. the dry plains of the sahel are mostly treeless. yet in niger, one of the nation along the sahel, millions of trees are now growing. researchers have been studying the progress of a re - greening campaign in niger
荒漠平原是在非洲的一個地方，它在撒哈拉沙漠的北部和更多肥沃土地的南部之間.荒漠平原的乾旱的平原上是幾乎沒有樹的.然而，在尼日，一個靠近荒漠平原的國家之一，數以萬計的樹現在正在生長.研究人員已經在研究在尼日的一個重新種植樹木的戰役的進程 -
Aligned with cytochrome b sequences from 29 siluriforms in japan, korea, russia, africa, north america and south america retrieved from genbank, and selected astyanax mexicanus, phenacogrammus interruptus, cyprinus carpio and oncorhynchus mykiss as outgroups, which are belonging to characiformes, cypriniformes and salmoniformes, respectively. we constructed a matrix of 65 dma sequences. the kimura ' s two - parameter distances were calculated and molecular phylogenetic trees were constructed by using the maximum parsimony ( mp ), maximum likelihood ( ml ) and neighbor - joining ( nj ) methods
所得序列與從genbank下載的分佈於非洲、北美洲和南美洲等地的鯰形目魚類同一基因序列進行排序，並選用脂鯉目（ characiformes ）的墨西哥麗脂鯉（ astyanaxmexicanus ） 、斷線脂鯉（ phenacogrammusinterruptus ） ，鯉形目（ cypriniformes ）的鯉（ cyprinuscarpio ）以及鮭形目（ salmoniformes ）大麻哈魚屬的oncorhynchusmykiss作外類群。
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