Submitted to: Mammalian Genome
Publication Type: Abstract Only
Publication Acceptance Date: 8/22/1996
Publication Date: N/A
Technical Abstract: The recent construction of genetic linkage maps of the porcine genome allows the assignment of loci affecting heritable traits of economic importance to specific chromosomal segments. Markers can, thus, be identified that may be useful in marker assisted selection to increase the frequency of favorable allele(s) in resource populations. In addition, mapping of these loci creates the opportunity to identify gene(s) influencing a trait, through positional cloning or positional candidate gene approaches. A positional cloning strategy requires the construction of contigs that physically span large sections of chromosomes. In the human and mouse systems, contig construction has depended on the availability of multiple YAC libraries that provide depth of coverage to minimize the impact of chimeric and deleted clones inherent in these libraries. A single porcine genomic YAC library has been reported but contains only one genome coverage which limits the ability to make large contigs. We report the construction of a porcine YAC library with approximately 5.5-fold coverage of the genome and a low rate of chimerism, that provides an additional resource for contig construction and positional cloning.