ENSEMBL: les marked with .dna.primary.assembly, such as: ftp://ftp.ensembl.org/ pub/release-77/fasta/homo_sapiens/dna/Homo_sapiens.GRCh38.dna.primary_assembly. fa.gz NCBI: no alternative - analysis set: ftp://ftp.ncbi.nlm.nih.gov/genbank/genomes/ Eukaryotes/vertebrates_mammals ...