tailieunhanh - Báo cáo sinh học: "The RN locus for meat quality maps to pig chromosome 15"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The RN locus for meat quality maps to pig chromosome 15 | 195 Genet Sei Evol 1995 27 195-199 Elsevier INRA Note The RN locus for meat quality maps to pig chromosome 15 D Milan1 p Le Roy2 N Woloszyn1 JC Caritez3 JM Eisen4 p Sellier2 J Gellin1 1 INRA laboratoire de génétique cellulaire BP 27 31326 Castanet-Tolosan cedex 2 INRA station de génétique quantitative et appliquée 78352 Jouy-en-Josas cedex 3 INRA domaine experimental du Magneraud 17700 Surgères 4 INRA station d amelioration génétique des animaux BP 27 31326 Castanet-Tolosan cedex France Received 16 December 1994 accepted 16 February 1995 Summary - An experiment was initiated in 1990 to study the RN locus which has been shown to exert a major effect on a measurement of meat quality in pigs the Napole technological yield RTN . The animals used originated from a composite line Laconie . Thirteen reference families of double backcross type RN Ịrn X rn rn were selected to search for a marker of the RN locus. The present study gives the results obtained on a sample of 220 offspring for which the RN allele coming from the heterozygous parent was considered as known after a segregation analysis of RTN data. A systematic approach was applied to identify markers linked to RN using a panel of 63 microsatellite markers which are informative in those families for 1 700 cM of the pig genome. The analysis of allelic segregations allowed the mapping of the RN locus to chromosome 15 at a distance of 18 cM from the marker S0088. pig meat quality major gene I molecular marker linkage Resume - Le locus RN de qualité de la viande est situé sur le chromosome 15 du pore. Un protocole experimental a débuté en 1990 pour étudier le locus RN mis en evidence par son effet majeur sur une mesure de la qualité de la viande de pore le rendement technologique Napole RTN . Les animaux utilises proviennent d une lignée synthétique Laconic . Treize families de reference de type double backcross RN rn X rn rn ont été choisies pour rechercher un marqueur du gène RN. La présente étude rapporte les .