This sounds like homework, and that doesn't look like a fasta file format to me, at least not the way you present it here. This also isn't a code writing service. Show what you have so far, how it failed, proper data etc. How do I post a question effectively?.

In reply to Re: Help with randomly sampling with proportions from a fasta file by marto
in thread Help with randomly sampling with proportions from a fasta file by glorenzo

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