序列操作套件 SMS2：
随机 DNA 区段
用随机碱基替换 DNA 序列的指定区段。
载入示例数据
填充示例序列，方便快速体验
Paste the raw sequence or one or more FASTA sequences into the text area below. Input limit is 500,000,000 characters.
>sample sequence ttaatgacctttttttttttccatgccctcgaataggcttgagcttgccaattaacgcgcacgggctggccgggcgtataagccaaggtgtagtgaggttgcattatacatgccggcttgtgattaacgcatgccataggacggttaggctcagaacccgcaaccaatacacgtgattttctcgtcccctg
Enter the base positions or ranges of interest. Use ".." or "-" to represent a range, and use a comma to separate entries.
The above ranges should be
replaced with random bases
preserved
during the randomization process.