1000 Genomes position numbers

Question

[bio]

Hi,

I am confused about the position numbers. From ftp://ftp-trace.ncbi.nih.gov/1000genomes/ftp/release/20130502/ I downloaded ALL.chr17.phase3_shapeit2_mvncall_integrated_v5a.20130502.genotypes and printed the beginning of the file, which looks like this:

CHROM POS ID REF ALT QUAL FILTER
17 52 rs556541063 C A 100 PASS

17 56 rs145615430 C T 100 PASS

17 78 rs148170422 G C 100 PASS

17 80 rs183779916 G A 100 PASS

Are the reference numbers unique for each positions?

Thanks for the help

Answer 1

[WouterDeCoster]

Assuming you mean the rs numbers with 'reference numbers' (e.g. rs556541063), those are dbSNP id's, (see also http://www.ncbi.nlm.nih.gov/projects/SNP/snp_ref.cgi?rs=556541063). Theoretically, these should be unique.

[bio]

Hi,

Yes, I was referring to the numbers starting with rs. Thanks for the helpful answer.