第一步Submission Type,在What do your sequences contain?项选择rRNA or rRNA-ITS,在What type of rRNA or rRNA-ITS项选择Eukaryotic nuclear rRNA or rRNA-ITS,在What do these eukaryotic nuclear rRNA or rRNA-ITS sequences contain项选择 contains rRNA-ITS region,以上各项都可以按实际需要进行选择,然后点击...