Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The distribution of the P-M system in Drosophila melanogaster strains from the People’s Republic of China D Anxolabéhère | 175 Genet Sei Evol 1990 22 175-188 Elsevier INRA Original article The distribution of the P-M system in Drosophila melanogaster strains from the People s Republic of China D Anxolabéhère1 K Hu2 D Nouaud1 G Périquet3 1 Université Pierre et Marie Curie mécanismes moléculaires de la speciation 4 Place Jussieu 75005 Paris 2 University of Hainan Biology Center 570001 Hainandao People s Republic of China 3Fạculté des Sciences institut de biocenotique experimentale des agrosystèmes Parc Grandmont 37200 Tours France Received 20 June 1989 accepted 22 February 1990 Summary - An extensive survey of the D melanogaster populations collected during the period 1982-1987 in the People s Republic of China was carried out with respect to the p M system of hybrid dysgenesis. Geographical differentiation was found between the continental area where only the M type occurs and the coastal areas where the populations were characterized as weak p or Q types. All populations studied carried p sequences and had a high frequency of the KP element a particular p element deletion-derivative . The geographical differentiation of eastern Asian populations appears to be a mirror image of that of western Eurasian populations with the highest frequencies of p elements existing in the coastal areas. The causes of this geographical differentiation are discussed. Drosophila melanogaster I geographical distribution mobile elements Resume - Distribution des caractéristiques du système p - M de dysgénésie des hybrides dans des souches de Drosophila melanogaster collẹctées en République populaire de Chine. Nous prệsentons une analyse des cạractéristiques génétiquẹs et moleculaires du système p -M de dysgénésie des hybrides de 39 populations de p danogaster collectées en Ẹépubliqụe populaire de Chine au cours de la période 19821987. n existe une differentiation géographique marquee entre la région continentale OÙ les populations sont de type M et les régions côtières dans lesquelles les populations sont .
