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Genome Res. 2005 Feb;15(2):302-11.

Mapping segmental and sequence variations among laboratory mice using BAC array CGH.

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  • 1Cancer Research Institute, University of California San Francisco, San Francisco, California 94143, USA.

Abstract

We used arrays of 2069 BACs (1303 nonredundant autosomal clones) to map sequence variation among Mus spretus (SPRET/Ei and SPRET/Glasgow) and Mus musculus (C3H/HeJ, BALB/cJ, 129/J, DBA/2J, NIH, FVB/N, and C57BL/6) strains. We identified 80 clones representing 74 autosomal loci of copy number variation (|log(2)ratio| >/= 0.4). These variant loci distinguish laboratory strains. By FISH mapping, we determined that 63 BACs mapped to a single site on C57BL/6J chromosomes, while 17 clones mapped to multiple chromosomes (n = 16) or multiple sites on one chromosome (n = 1). We also show that small ratio changes (Delta log(2)ratio approximately 0.1) distinguish homozygous and heterozygous regions of the genome in interspecific backcross mice, providing an efficient method for genotyping progeny of backcrosses.

PMID:
15687294
[PubMed - indexed for MEDLINE]
PMCID:
PMC546532
Free PMC Article

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