This function adds sequences located in a particular folder
(default is "0.AdditionalSequences"
) to
fasta files in another folder (default is "0.Sequences"
).
Files must be in FASTA format and names
of the files should perfectly match the ones in the previously
downloaded folder (e.g. "0.Sequences"
).
This function creates a third new folder "0.0.OriginalDownloaded"
containing the originally
downloaded sequences. The sequences in the "0.Sequences"
folder get
replaced with the combined ones.
Note that new sequences can be added even for just a fraction of the
originally downloaded genes.