我有一个数据框如下:
> dfnew
C1 C2 C3 C4 C5 C6
1 A A G A G A
2 A T T T G G
3 T A G A T A
4 C A A A A G
5 C A T T T C
6 C A A A T A
7 T C T G A A
8 G A G C T A
9 C T A T G A
10 G A A A G G
11 …Run Code Online (Sandbox Code Playgroud) r ×1