Recently, I received a fasta format sequence file from one of my colleges, But there are some strange characters like ^? in the sequence , does anyone knows why and how can I delete these characters? Because there are a lot of ^? in sequences and I don't want to delete manually.
I tried to recognize these characters using vim by
\^? but failed. Since the data is output of MEGA maybe there is some reasons in there.
The sequence is like this: