TAILIEUCHUNG - Báo cáo sinh học: " DNA polymorphisms of subterranean mole rats of the Spalax ehrenbergi superspecies in Israel"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: DNA polymorphisms of subterranean mole rats of the Spalax ehrenbergi superspecies in Israel | Genet Sei Evol 1993 25 211-227 Elsevier INRA 211 Original article Myosin-heavy-chain DNA polymorphisms of subterranean mole rats of the Spalax ehrenbergi superspecies in Israel R Ben-Shlomo E Nevo University of Haifa Institute of Evolution Haifa 31905 Israel Received 6 June 1992 accepted 14 December 1992 Summary Restriction-fragment-length polymorphisms RFLPs of the sarcomeric-myosin heavy chain multigene family were studied in 13 populations of 4 chromosomal species 2n 52 54 58 and 60 of the mole rat Spalax ehrenbergi superspecies in Israel. A minimum number of 6 hybridizing fragments occurred in the mole rat corresponding to a minimum of 6 probably even 8 different loci of the sarcomeric myosin heavy chain. The level of polymorphism was 31 with a low number of alleles in the polymorphic loci. All of the populations including a desert isolate were polymorphic at some level. Among-sample fragment variation was adequate to differentiate between some of the chromosomal species and confirms earlier evidence that gene flow between the chromosomal species is limited. myosin heavy chain RFLP Spalax ehrenbergi mole rat Resume Polymorphismes de 1 ADN de la chaĩne lourde de la myosine chez des rats-taupes souterraỉns de la superespèce Spalax ehrenbergi en Israel. Les polymorphismes de restriction RFLP de la famille multigénique de la chaĩne lourde de la myosine sarcomérique ont été étudiés dans 13 populations de ị espèces chromosomiques 2n 52 5ị 58 et 60 de la superespèce de rat-taupe Spalax ehrenbergi en Israel. Il existe chez le rat-taupe au moins 6 fragments qui peuvent s hybrider correspondant à au moins 6 probablement même 8 locus differents de la chaỉne lourde de la myosine sarcomérique. Le niveau moyen de polymorphisme est de 31 environ avec un faible nombre d alleles aux locus polymorphes. Toutes les populations y compris un isolat dans un desert sont à quelque degré. La variation des fragments entre échantillons est suffisante pour differencier .

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