[BioC] chromosome arms missing from Affy's Mapping 500K Array Set SNP chips?
Stephanie Mewborn
skmewbor at uchicago.edu
Wed Sep 19 22:26:44 CEST 2007
Human chromosomes 13, 14, 15, 21, and 22 are acrocentric chromosomes
which lack a p arm. The only DNA content in the location of a p arm is
stalk and satellite DNA and the ribosomal DNA.
--
Stephanie K. Mewborn, Ph.D.
Post-Doctoral Fellow
McNally Lab
University of Chicago, Department of Medicine
G611 Mail Code: MC6088
5841 S. Maryland Ave.
Chicago, IL 60637
Phone: 773.702.2684
Fax: 773.702.2681
Email: skmewbor at uchicago.edu
Wittner, Ben, Ph.D. wrote:
> >From inspecting the files Mapping250K_Nsp.na22.annot.csv and
> Mapping250K_Sty.na22.annot.csv, which I downloaded from the Affy web site, it
> seems to me that Affy's Mapping 500K Array Set SNP chips do not probe the p arms
> of chromosomes 13, 14, 15 and 22.
>
> Is that right?
> If so, does anyone know why that is?
>
> Thanks in advance.
>
> -Ben
>
>
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