如何在ncbi的genebank下载人来基因组序列?
ftp://ftp.ncbi.nih.gov/genomes/H_sapiens/CHR_01/
上面有三种fasta版本
hs_alt_Hs_Celera_chr1.fa.gz
hs_alt_HuRef_chr1.fa.gz
hs_ref_GRCh37.p2_chr1.fa.gz
应该下哪一个是人类一号染色体的基因序列?
说明文档里面的这么一段话：
Each file is named according to the abbreviation for the species,
whether the assembly is the reference assembly (_ref_) or an alternate
assembly (_alt_), the assembly name, and either the chromosome label
or the scaffold group (unlocalized, unplaced, or alts).
又是什么意思呢?