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A comprehensive linkage map of the pig based on a wild pig ‐ Large White intercross
Author(s) -
Marklund L.,
Moller M Johansson,
Juneja R. K.,
Mariani P.,
Ellegren H.,
Andersson L.,
Høyheim B.,
Davies W.,
Fredholm M.,
Coppieters W.
Publication year - 1996
Publication title -
animal genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 81
eISSN - 1365-2052
pISSN - 0268-9146
DOI - 10.1111/j.1365-2052.1996.tb00487.x
Subject(s) - pseudoautosomal region , biology , autosome , genetics , genetic linkage , linkage (software) , x chromosome , chromosome , sex linkage , genome , recombination , gene mapping , genetic linkage map , gene
Summary A comprehensive linkage map, including 236 linked markers with a total sex‐average map length of about 2300 cM, covering nearly all parts of the pig genome has been established. Linkage groups were assigned to all 18 autosomes, the X chromosome and the X/Y pseudoautosomal region. Several new gene assignments were made including the assignment of linkage group U1 (EAK‐HPX) to chromosome 9. The linkage map includes 77 type I loci informative for comparative mapping and 72 in situ mapped markers physically anchoring the linkage groups on chromosomes. A highly significant heterogeneity in recombination rates between sexes was observed with a general tendency towards an excess of female recombination. The average ratio of female to male recombination was estimated at 1–4:1 but this parameter varied between chromosomes as well as between regions within chromosomes. An intriguing finding was that blood group loci were overrepresented at the distal ends of linkage groups.