I have a long DNA sequence alignment in fasta format (I prefer to open the alignment in MEGA). Now I want to extract partial sequences from the alignment and save as a different file. Do you know if there is a easy way to perform such a task? I may delete un-needed regions and keep only the region needed, and save the remaining sequences, but the problem is that I need to extract many different regions from the alignment. Please let me know if you have a simple solution that can save time and labour.