https://blog.wongcw.com/2021/01/13/%e5%9c%b0%e7%90%83%e9%a6%96%e6%89%b9%e7%94%9f%e5%91%bd%e5%bd%a2%e5%bc%8f%e6%88%96%e7%94%b1rna-dna%e6%b7%b7%e5%90%88%e7%94%a2%e7%94%9f/