Hi, I'm new to Bowtie2 and want to generate the indexer with Bowtie2-Build from a multiple-segment reference virus. I downloaded it from NCBI as one fasta file with multiple sequences (segments) in the file. I want to know if Bowtie2-Build can run with one fasta file with multiple sequences. If not, I will break it into multiple fasta files with one sequence in each file, then feed them as comma-separated list of the fasta files. Thank you very much.